Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and 4.1.133.Final, Netty's HttpProxyHandler constructs HTTP CONNECT requests with header validation explicitly disabled. The newInitialMessage() method creates headers using DefaultHttpHeadersFactory.headersFactory().withValidation(false), then adds user-provided outboundHeaders without any CRLF validation. This allows an attacker who can influence the outbound headers to inject arbitrary HTTP headers into the CONNECT request sent to the proxy server. This vulnerability is fixed in 4.2.13.Final and 4.1.133.Final.

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:76128 advisory.

    Red Hat Single Sign-On 7.6 is a standalone server, based on the Keycloak project, that provides     authentication and standards-based single sign-on capabilities for web and mobile applications.

    This release of Red Hat Single Sign-On 7.6.13 on RHEL 7 serves as a replacement for Red Hat Single Sign-On     7.6.12, and includes bug fixes and enhancements, which are documented in the Release Notes document linked     to in the References.

    Security Fix(es):
    * undertow-core: Undertow MadeYouReset HTTP/2 DDoS Vulnerability (CVE-2025-9784)
    * Undertow HTTP Server Fails to Reject Malformed Host Headers Leading to Potential Cache Poisoning and     SSRF (CVE-2025-12543)
    * Undertow HTTP Server Fails to Reject Malformed Host Headers Leading to Potential Cache Poisoning and     SSRF (CVE-2025-12543)
    * Information disclosure and data deletion via second-order SQL injection (CVE-2026-0603)
    * GOSTCTR implementation unable to process more than 255 blocks correctly (CVE-2025-14813)
    * PKIX draft CompositeVerifier accepts empty signature sequence as valid (CVE-2026-5588)
    * unbounded PGP AEAD chunk size leads to pre-auth resource exhaustion (CVE-2026-3505)
    * High integrity impact due to improper DNS domain name constraint enforcement (CVE-2026-42579)
    * HTTP Request Smuggling due to improper handling of conflicting HTTP/1.0 headers (CVE-2026-42581)
    * HTTP Header Injection via HttpProxyHandler Disabled Validation (CVE-2026-42578)
    * Denial of Service via unbounded memory allocation in HTTP content decompression (CVE-2026-42587)
    * Denial of Service via unbounded memory allocation in HTTP content decompression (CVE-2026-42587)
    * IPv6 subnet rule bypass due to incorrect masking operation (CVE-2026-44249)
    * Denial of Service via malformed HAProxy message (CVE-2026-44893)
    * Denial of Service due to resource leak (CVE-2026-48043)
    * Netty HAProxy PROXY protocol v2 codec: Denial of Service via memory leak from crafted PROXY protocol     headers (CVE-2026-48059)
    * Netty has Insufficient Bailiwick Validation for NS Records (CVE-2026-47691)
    * Improper trust manager handling leads to hostname verification bypass (CVE-2026-50010)
    * Information disclosure and data manipulation due to improper CNAME record validation (CVE-2026-45674)
    * Denial of Service due to eager buffer allocation in TLS handshake (CVE-2026-45416)
    * Arbitrary code execution via PolymorphicTypeValidator bypass (CVE-2026-54512)
    * Denial of Service via deeply nested JSON processing (CVE-2026-50193)
    * Denial of Service via incomplete fix in async JSON parser (CVE-2026-68494)
    * Missing authentication on EAP's IIOP NameService leads to MITM or DoS (CVE-2026-15563)
    * Session fixation in OIDC login flow that can lead to account takeover (CVE-2026-7507)
    * Denial of Service via specially crafted SAML input (CVE-2026-7307)
    * Denial of Service due to excessive SAMLRequest decompression (CVE-2026-2575)
    * Denial of Service via excessive processing of OpenID Connect scope parameters (CVE-2026-4634)
    * Unauthorized access via improper validation of encrypted SAML assertions (CVE-2026-2092)

    For more details about the security issue(s), including the impact, a CVSS score, and other related     information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:76129 advisory.

    Red Hat Single Sign-On 7.6 is a standalone server, based on the Keycloak project, that provides     authentication and standards-based single sign-on capabilities for web and mobile applications.

    This release of Red Hat Single Sign-On 7.6.13 on RHEL 8 serves as a replacement for Red Hat Single Sign-On     7.6.12, and includes bug fixes and enhancements, which are documented in the Release Notes document linked     to in the References.

    Security Fix(es):
    * undertow-core: Undertow MadeYouReset HTTP/2 DDoS Vulnerability (CVE-2025-9784)
    * Undertow HTTP Server Fails to Reject Malformed Host Headers Leading to Potential Cache Poisoning and     SSRF (CVE-2025-12543)
    * Undertow HTTP Server Fails to Reject Malformed Host Headers Leading to Potential Cache Poisoning and     SSRF (CVE-2025-12543)
    * Information disclosure and data deletion via second-order SQL injection (CVE-2026-0603)
    * GOSTCTR implementation unable to process more than 255 blocks correctly (CVE-2025-14813)
    * PKIX draft CompositeVerifier accepts empty signature sequence as valid (CVE-2026-5588)
    * unbounded PGP AEAD chunk size leads to pre-auth resource exhaustion (CVE-2026-3505)
    * High integrity impact due to improper DNS domain name constraint enforcement (CVE-2026-42579)
    * HTTP Request Smuggling due to improper handling of conflicting HTTP/1.0 headers (CVE-2026-42581)
    * HTTP Header Injection via HttpProxyHandler Disabled Validation (CVE-2026-42578)
    * Denial of Service via unbounded memory allocation in HTTP content decompression (CVE-2026-42587)
    * Denial of Service via unbounded memory allocation in HTTP content decompression (CVE-2026-42587)
    * IPv6 subnet rule bypass due to incorrect masking operation (CVE-2026-44249)
    * Denial of Service via malformed HAProxy message (CVE-2026-44893)
    * Denial of Service due to resource leak (CVE-2026-48043)
    * Netty HAProxy PROXY protocol v2 codec: Denial of Service via memory leak from crafted PROXY protocol     headers (CVE-2026-48059)
    * Netty has Insufficient Bailiwick Validation for NS Records (CVE-2026-47691)
    * Improper trust manager handling leads to hostname verification bypass (CVE-2026-50010)
    * Information disclosure and data manipulation due to improper CNAME record validation (CVE-2026-45674)
    * Denial of Service due to eager buffer allocation in TLS handshake (CVE-2026-45416)
    * Arbitrary code execution via PolymorphicTypeValidator bypass (CVE-2026-54512)
    * Denial of Service via deeply nested JSON processing (CVE-2026-50193)
    * Denial of Service via incomplete fix in async JSON parser (CVE-2026-68494)
    * Missing authentication on EAP's IIOP NameService leads to MITM or DoS (CVE-2026-15563)
    * Session fixation in OIDC login flow that can lead to account takeover (CVE-2026-7507)
    * Denial of Service via specially crafted SAML input (CVE-2026-7307)
    * Denial of Service due to excessive SAMLRequest decompression (CVE-2026-2575)
    * Denial of Service via excessive processing of OpenID Connect scope parameters (CVE-2026-4634)
    * Unauthorized access via improper validation of encrypted SAML assertions (CVE-2026-2092)

    For more details about the security issue(s), including the impact, a CVSS score, and other related     information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:76130 advisory.

    Red Hat Single Sign-On 7.6 is a standalone server, based on the Keycloak project, that provides     authentication and standards-based single sign-on capabilities for web and mobile applications.

    This release of Red Hat Single Sign-On 7.6.13 on RHEL 9 serves as a replacement for Red Hat Single Sign-On     7.6.12, and includes bug fixes and enhancements, which are documented in the Release Notes document linked     to in the References.

    Security Fix(es):
    * undertow-core: Undertow MadeYouReset HTTP/2 DDoS Vulnerability (CVE-2025-9784)
    * Undertow HTTP Server Fails to Reject Malformed Host Headers Leading to Potential Cache Poisoning and     SSRF (CVE-2025-12543)
    * Undertow HTTP Server Fails to Reject Malformed Host Headers Leading to Potential Cache Poisoning and     SSRF (CVE-2025-12543)
    * Information disclosure and data deletion via second-order SQL injection (CVE-2026-0603)
    * GOSTCTR implementation unable to process more than 255 blocks correctly (CVE-2025-14813)
    * PKIX draft CompositeVerifier accepts empty signature sequence as valid (CVE-2026-5588)
    * unbounded PGP AEAD chunk size leads to pre-auth resource exhaustion (CVE-2026-3505)
    * High integrity impact due to improper DNS domain name constraint enforcement (CVE-2026-42579)
    * HTTP Request Smuggling due to improper handling of conflicting HTTP/1.0 headers (CVE-2026-42581)
    * HTTP Header Injection via HttpProxyHandler Disabled Validation (CVE-2026-42578)
    * Denial of Service via unbounded memory allocation in HTTP content decompression (CVE-2026-42587)
    * Denial of Service via unbounded memory allocation in HTTP content decompression (CVE-2026-42587)
    * IPv6 subnet rule bypass due to incorrect masking operation (CVE-2026-44249)
    * Denial of Service via malformed HAProxy message (CVE-2026-44893)
    * Denial of Service due to resource leak (CVE-2026-48043)
    * Netty HAProxy PROXY protocol v2 codec: Denial of Service via memory leak from crafted PROXY protocol     headers (CVE-2026-48059)
    * Netty has Insufficient Bailiwick Validation for NS Records (CVE-2026-47691)
    * Improper trust manager handling leads to hostname verification bypass (CVE-2026-50010)
    * Information disclosure and data manipulation due to improper CNAME record validation (CVE-2026-45674)
    * Denial of Service due to eager buffer allocation in TLS handshake (CVE-2026-45416)
    * Arbitrary code execution via PolymorphicTypeValidator bypass (CVE-2026-54512)
    * Denial of Service via deeply nested JSON processing (CVE-2026-50193)
    * Denial of Service via incomplete fix in async JSON parser (CVE-2026-68494)
    * Missing authentication on EAP's IIOP NameService leads to MITM or DoS (CVE-2026-15563)
    * Session fixation in OIDC login flow that can lead to account takeover (CVE-2026-7507)
    * Denial of Service via specially crafted SAML input (CVE-2026-7307)
    * Denial of Service due to excessive SAMLRequest decompression (CVE-2026-2575)
    * Denial of Service via excessive processing of OpenID Connect scope parameters (CVE-2026-4634)
    * Unauthorized access via improper validation of encrypted SAML assertions (CVE-2026-2092)

    For more details about the security issue(s), including the impact, a CVSS score, and other related     information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and
    4.1.133.Final, Netty's HttpProxyHandler constructs HTTP CONNECT requests with header validation explicitly
    disabled. The newInitialMessage() method creates headers using
    DefaultHttpHeadersFactory.headersFactory().withValidation(false), then adds user-provided outboundHeaders
    without any CRLF validation. This allows an attacker who can influence the outbound headers to inject
    arbitrary HTTP headers into the CONNECT request sent to the proxy server. This vulnerability is fixed in
    4.2.13.Final and 4.1.133.Final. (CVE-2026-42578)

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:73644 advisory.

    Red Hat JBoss Enterprise Application Platform 7 is a platform for Java applications based on the WildFly     application runtime. This release of Red Hat JBoss Enterprise Application Platform 7.3.19 serves as a     replacement for Red Hat JBoss Enterprise Application Platform 7.3.18, and includes bug fixes and     enhancements. See the Red Hat JBoss Enterprise Application Platform 7.3.19 Release Notes for information     about the most significant bug fixes and enhancements included in this release.

    Security Fix(es):

    * mchange-commons-java: mchange-commons-java: Arbitrary code execution via JNDI dereferencing of crafted     objects [eap-7.3.z] (CVE-2026-27727)

    * com.mchange/c3p0: c3p0: Arbitrary Code Execution via deserialization of crafted objects [eap-7.3.z]     (CVE-2026-27830)

    * netty-codec: Netty: Denial of Service via excessive memory allocation in LZ4FrameDecoder [eap-7.3.z]     (CVE-2026-42583)

    * netty-handler-proxy: Netty: HTTP Header Injection via HttpProxyHandler Disabled Validation [eap-7.3.z]     (CVE-2026-42578)

    * netty-codec-http: Netty: HTTP Request Smuggling due to improper handling of conflicting HTTP/1.0 headers     [eap-7.3.z] (CVE-2026-42581)

    * netty-codec-http: Netty: Request smuggling via malformed Transfer-Encoding parsing [eap-7.3.z]     (CVE-2026-42585)

    * netty-codec-http: Netty: Incorrect HTTP response parsing leads to data confusion [eap-7.3.z]     (CVE-2026-42584)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:73976 advisory.

    Red Hat JBoss Enterprise Application Platform 7 is a platform for Java applications based on the WildFly     application runtime. This release of Red Hat JBoss Enterprise Application Platform 7.1.16 serves as a     replacement for Red Hat JBoss Enterprise Application Platform 7.1.15, and includes bug fixes and     enhancements. See the Red Hat JBoss Enterprise Application Platform 7.1.16 Release Notes for information     about the most significant bug fixes and enhancements included in this release.

    Security Fix(es):

    * mchange-commons-java: mchange-commons-java: Arbitrary code execution via     JNDI dereferencing of crafted objects [eap-7.1.z] (CVE-2026-27727)

    * com.mchange/c3p0: c3p0: Arbitrary Code Execution via deserialization of     crafted objects [eap-7.1.z] (CVE-2026-27830)

    * netty-codec: Netty: Denial of Service via excessive memory allocation in     LZ4FrameDecoder [eap-7.1.z] (CVE-2026-42583)

    * netty-handler-proxy: Netty: HTTP Header Injection via HttpProxyHandler Disabled Validation [eap-7.1.z]     (CVE-2026-42578)

    * netty-codec-http: Netty: HTTP Request Smuggling due to improper handling     of conflicting HTTP/1.0 headers [eap-7.1.z] (CVE-2026-42581)

    * netty-codec-http: Netty: Request smuggling via malformed     Transfer-Encoding parsing [eap-7.1.z] (CVE-2026-42585)

    * netty-codec-http: Netty: Incorrect HTTP response parsing leads to data     confusion [eap-7.1.z] (CVE-2026-42584)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of IBM Cognos Analytics installed on the remote host is 12.0.4 prior to 12.0.4 FP3, or 12.1.x prior to 12.1.3 FP2. It is, therefore, affected by multiple vulnerabilities as referenced in the IBM Security Bulletin No.
7287209:

  - NLTK versions 3.9.2 and prior are vulnerable to arbitrary code execution due to improper input     validation in the StanfordSegmenter module. The module dynamically loads external Java .jar files     without verification or sandboxing. An attacker can supply or replace the JAR file, enabling the     execution of arbitrary Java bytecode at import time. (CVE-2026-0848)

  - The lodash fix for CVE-2021-23337 added validation for the variable option in _.template but did not     apply the same validation to options.imports key names. Both paths flow into the same Function()     constructor sink. When an application passes untrusted input as options.imports key names, an attacker     can inject default-parameter expressions that execute arbitrary code at template compilation time.
    (CVE-2026-4800)

  - cryptography is a package designed to expose cryptographic primitives and recipes to Python developers.
    From 45.0.0 to before 46.0.7, if a non-contiguous buffer was passed to APIs which accepted Python     buffers (e.g. Hash.update()), this could lead to buffer overflows. (CVE-2026-39892)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:53644 advisory.

    Red Hat JBoss Enterprise Application Platform 7 is a platform for Java applications based on the WildFly     application runtime. This release of Red Hat JBoss Enterprise Application Platform 7.4.25 serves as a     replacement for Red Hat JBoss Enterprise Application Platform 7.4.24, and includes bug fixes and     enhancements. See the Red Hat JBoss Enterprise Application Platform 7.4.25 Release Notes for information     about the most significant bug fixes and enhancements included in this release.

    Security Fix(es):

    * netty-codec-redis: Netty: Denial of Service via malicious Redis array header (CVE-2026-50011)

    * netty-handler: Netty: Denial of Service due to eager buffer allocation in TLS handshake (CVE-2026-45416)

    * netty-codec-redis: netty-codec-redis: Denial of Service via crafted Redis payload with deeply nested     arrays (CVE-2026-44250)

    * netty-codec-redis: netty-codec-redis: Denial of Service via crafted Redis payloads (CVE-2026-44890)

    * netty-transport-sctp: Netty-transport-sctp: Denial of Service due to unbounded memory growth from     SctpMessage fragments (CVE-2026-46340)

    * netty-resolver-dns: Netty: Information disclosure and data manipulation due to improper CNAME record     validation (CVE-2026-45674)

    * netty-handler: Netty: Improper trust manager handling leads to hostname verification bypass     (CVE-2026-50010)

    * netty-codec-redis: Netty's Lack of Lifecycle Cleanup Leads to Pooled ByteBuf Leak in     RedisArrayAggregator (CVE-2026-48006)

    * netty-resolver-dns: Netty has Insufficient Bailiwick Validation for NS Records (CVE-2026-47691)

    * netty-codec-haproxy: Netty HAProxy PROXY protocol v2 codec: Denial of Service via memory leak from     crafted PROXY protocol headers (CVE-2026-48059)

    * netty-codec-http2: netty-codec-http2: Denial of Service due to resource leak (CVE-2026-48043)

    * netty-codec-haproxy: Netty-codec-haproxy: Denial of Service via malformed HAProxy message     (CVE-2026-44893)

    * netty-codec-http: Netty: Request smuggling via malformed Transfer-Encoding parsing (CVE-2026-42585)

    * netty-codec-http2: Netty: Denial of Service via unbounded memory allocation in HTTP content     decompression (CVE-2026-42587)

    * netty-codec-http: Netty: Denial of Service via unbounded memory allocation in HTTP content decompression     (CVE-2026-42587)

    * netty-codec-http: Netty: HTTP request smuggling via URI manipulation and CRLF injection (CVE-2026-41417)

    * netty-handler-proxy: Netty: HTTP Header Injection via HttpProxyHandler Disabled Validation     (CVE-2026-42578)

    * netty-codec-http: Netty: HTTP Request Smuggling due to improper handling of conflicting HTTP/1.0 headers     (CVE-2026-42581)

    * netty-codec-http: Netty: Incorrect HTTP response parsing leads to data confusion (CVE-2026-42584)

    * netty-codec-dns: Netty: High integrity impact due to improper DNS domain name constraint enforcement     (CVE-2026-42579)

    * picketlink-federation: auth bypass in Picketlink SAML unsolicited-response (CVE-2026-10579)

    * bcprov-jdk18on: LDAP injection vulnerability in LDAPStoreHelper.java (CVE-2026-0636)

    * bcprov-jdk15on: LDAP injection vulnerability in LDAPStoreHelper.java (CVE-2026-0636)

    * bcprov-jdk15: LDAP injection vulnerability in LDAPStoreHelper.java (CVE-2026-0636)

    * bcprov-jdk12: LDAP injection vulnerability in LDAPStoreHelper.java (CVE-2026-0636)

    * bcpg-jdk18on: unbounded PGP AEAD chunk size leads to pre-auth resource exhaustion (CVE-2026-3505)

    * bcpg-jdk15on: unbounded PGP AEAD chunk size leads to pre-auth resource exhaustion (CVE-2026-3505)

    * bcpkix-jdk18on: PKIX draft CompositeVerifier accepts empty signature sequence as valid (CVE-2026-5588)

    * bcpkix-jdk15on: PKIX draft CompositeVerifier accepts empty signature sequence as valid (CVE-2026-5588)

    * bcprov-jdk18on: GOSTCTR implementation unable to process more than 255 blocks correctly (CVE-2025-14813)

    * bcprov-jdk15on: GOSTCTR implementation unable to process more than 255 blocks correctly (CVE-2025-14813)

    * bcprov-jdk15: GOSTCTR implementation unable to process more than 255 blocks correctly (CVE-2025-14813)

    * bcprov-jdk12: GOSTCTR implementation unable to process more than 255 blocks correctly (CVE-2025-14813)

    * bcprov-jdk15: private key leakage via non-constant time comparisons (CVE-2026-5598)

    * bcprov-jdk12: private key leakage via non-constant time comparisons (CVE-2026-5598)

    * artemis-server: Apache Artemis, Apache ActiveMQ Artemis: Message injection and exfiltration due to     missing authentication (CVE-2026-27446)

    * undertow-core: Undertow: Authentication Bypass via AJP ssl_cert/is_ssl Forgery (CVE-2026-15554)

    * wildfly-clustering-infinispan-marshalling: Jboss Deserialization RCE via Unfiltered River Unmarshaller     (CVE-2026-15555)

    * picketlink-federation: picketlink SAML 2.0 auth bypass via missing assertions (CVE-2026-15556)

    * openjdk-orb: unauthed class loading via IIOP in EAP (CVE-2026-15560)

    * undertow-core: OOM via missing limits in chunked trailer in EAP's Undertow (CVE-2026-15561)

    * jboss-remoting: jboss-remoting: integer overflow in MessageReader leads to pre-authentication denial of     service (CVE-2026-15562)

    * wildfly-iiop-openjdk: Missing authentication on EAP's IIOP NameService leads to MITM or DoS     (CVE-2026-15563)

    * jsf-impl: mojarra: Unauthenticated RCE in EAP JSF applications via EL injection in ui:include     (CVE-2026-46581)

    * netty-handler: netty-handler: IPv6 subnet rule bypass due to incorrect masking operation     (CVE-2026-44249)

    * jackson-core: Denial of Service via incomplete fix in async JSON parser (CVE-2026-68494)

    For more details about the security issue(s), including the impact, a CVSS     score, acknowledgments, and other related information, refer to the CVE page(s)     listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:2308-1 advisory.

    This update for netty, netty-tcnative fixes the following issues

    - CVE-2026-41417: missing validations leads to HTTP request smuggling and RTSP request injection via     start-line       injection in `DefaultHttpRequest.setUri()` (bsc#1264350).
    - CVE-2026-42578: HTTP Header Injection via HttpProxyHandler Disabled Validation in Netty (bsc#1265243).
    - CVE-2026-42579: DNS codec does not enforce RFC 1035 domain name constraints during either encoding or     decoding       (bsc#1265272).
    - CVE-2026-42580: chunk size parser silently overflows int and enables request smuggling attacks     (bsc#1265273).
    - CVE-2026-42581: TE+CL header coexistence in HTTP/1.0 requests bypasses smuggling sanitization     (bsc#1265277).
    - CVE-2026-42583: resource exhaustion and possible denial of service via `Lz4FrameDecoder` (bsc#1265279).
    - CVE-2026-42584: improper handling of inbound responses in `HttpClientCodec` can lead to response     desynchronization       (bsc#1265280).
    - CVE-2026-42585: Netty is an asynchronous, event-driven network application framework (bsc#1265292).
    - CVE-2026-42586: CRLF Injection in Netty Redis Codec Encoder (bsc#1265245).
    - CVE-2026-42587: HttpContentDecompressor maxAllocation bypass via Content-Encoding: br/zstd/snappy     enables       decompression bomb DoS (bsc#1265246).
    - CVE-2026-44248: Netty is an asynchronous, event-driven network application framework (bsc#1265294).
    - CVE-2026-42582: HTTP/3 QPACK literal unbounded allocation (bsc#1265318).

    Changes for netty:

    - Upgrade to upstream version 4.1.133

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 26.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8401-1 advisory.

    It was discovered that Netty's HTTP proxy handler did not properly validate headers when constructing     CONNECT requests. An attacker could possibly use this issue to inject arbitrary HTTP headers into CONNECT     requests. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS,     and Ubuntu 26.04 LTS. (CVE-2026-42578)

    It was discovered that Netty's DNS codec did not properly enforce domain name constraints. An attacker     could possibly use this issue to bypass domain name validation, or cause Netty to consume resources,     leading to a denial of service. This issue only affected Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04     LTS, and Ubuntu 26.04 LTS. (CVE-2026-42579)

    It was discovered that Netty did not correctly handle HTTP/1.0 requests containing both a Transfer-     Encoding and Content-Length header. A remote attacker could possibly use this issue to perform HTTP     request smuggling attacks. (CVE-2026-42581)

    Violeta Georgieva discovered that Netty incorrectly paired responses with requests when handling     informational HTTP responses. A remote attacker could possibly use this issue to perform HTTP request     smuggling attacks. (CVE-2026-42584)

    Violeta Georgieva discovered that Netty incorrectly parsed malformed Transfer-Encoding headers. A remote     attacker could possibly use this issue to perform HTTP request smuggling attacks. (CVE-2026-42585)

    It was discovered that Netty's Redis encoder did not validate CRLF characters. An attacker could possibly     use this issue to inject arbitrary Redis commands. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04     LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-42586)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and     4.1.133.Final, Netty's HttpProxyHandler constructs HTTP CONNECT requests with header validation explicitly     disabled. The newInitialMessage() method creates headers using     DefaultHttpHeadersFactory.headersFactory().withValidation(false), then adds user-provided outboundHeaders     without any CRLF validation. This allows an attacker who can influence the outbound headers to inject     arbitrary HTTP headers into the CONNECT request sent to the proxy server. This vulnerability is fixed in     4.2.13.Final and 4.1.133.Final. (CVE-2026-42578)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Type	Severity
363386	RHEL 7 : Red Hat Single Sign-On 7.6.13 security update on RHEL 7 (Important) (RHSA-2026:76128)	Nessus	Red Hat Local Security Checks	Local	critical
363126	RHEL 8 : Red Hat Single Sign-On 7.6.13 security update on RHEL 8 (Important) (RHSA-2026:76129)	Nessus	Red Hat Local Security Checks	Local	critical
363125	RHEL 9 : Red Hat Single Sign-On 7.6.13 security update on RHEL 9 (Important) (RHSA-2026:76130)	Nessus	Red Hat Local Security Checks	Local	critical
465000	Echo: io.netty:netty-handler-proxy: security update to 4.1.133.Final	Tenable Cloud Security	Echo Local Security Checks	Local	medium
465000	Echo: io.netty:netty-handler-proxy: security update to 4.1.133.Final	Tenable Self-Hosted Container Security	Echo Local Security Checks	Local	medium
353413	RHEL 7 : Red Hat JBoss Enterprise Application Platform 7.3.19 Update (Important) (RHSA-2026:73644)	Nessus	Red Hat Local Security Checks	Local	high
351867	RHEL 7 : Red Hat JBoss Enterprise Application Platform 7.1.16 (RHSA-2026:73976)	Nessus	Red Hat Local Security Checks	Local	high
347960	IBM Cognos Analytics 12.0.4 < 12.0.4 FP3 / 12.1.x < 12.1.3 FP2 Multiple Vulnerabilities (7287209)	Nessus	CGI abuses	Remote	high
334631	RHEL 7 : Red Hat JBoss Enterprise Application Platform 7.4.25 security pdate (Important) (RHSA-2026:53644)	Nessus	Red Hat Local Security Checks	Local	critical
321020	SUSE SLED15 / SLES15 Security Update : netty, netty-tcnative (SUSE-SU-2026:2308-1)	Nessus	SuSE Local Security Checks	Local	medium
320400	Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 26.04 LTS : Netty vulnerabilities (USN-8401-1)	Nessus	Ubuntu Local Security Checks	Local	medium
314888	Linux Distros Unpatched Vulnerability : CVE-2026-42578	Nessus	Misc.	Local	medium
441294	SCA: security update for io.netty:netty-handler-proxy (GHSA-45q3-82m4-75jr)	Tenable Cloud Security	SCA Checks	Local	medium
441294	SCA: security update for io.netty:netty-handler-proxy (GHSA-45q3-82m4-75jr)	Tenable Self-Hosted Container Security	SCA Checks	Local	medium

Detections

Analytics

CVE-2026-42578

medium

Tenable Plugins

critical

critical

critical

medium

medium

high

high

high

critical

medium

medium

medium

medium

medium