Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and 4.1.133.Final, Netty incorrectly parses malformed Transfer-Encoding, enabling request smuggling attacks. This vulnerability is fixed in 4.2.13.Final and 4.1.133.Final.

According to its self-reported version number, the Atlassian Crowd application running on the remote host is prior to 7.2.1. It is, therefore, affected by multiple vulnerabilities, including flaws in bundled third-party dependencies :

- Multiple HTTP request smuggling vulnerabilities in the bundled Netty dependency. (CVE-2026-42581, CVE-2026-42584, CVE-2026-42585)

- A business logic vulnerability in the bundled Spring Security dependency. (CVE-2026-22732)

- A denial of service vulnerability in the bundled PostgreSQL JDBC Driver dependency. (CVE-2026-42198)

- Multiple denial of service vulnerabilities in the bundled Netty dependency. (CVE-2026-42583, CVE-2026-42587)

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

According to its self-reported version number, the Atlassian Jira application running on the remote host is prior to 10.3.22 or 10.4.x prior to 11.3.7. It is, therefore, affected by multiple vulnerabilities, including flaws in bundled third-party dependencies :

- Multiple server-side request forgery (SSRF) vulnerabilities in the bundled axios dependency. (CVE-2026-42043, CVE-2026-42038)

- A prototype pollution vulnerability in the bundled axios dependency. (CVE-2026-40175)

- An injection vulnerability in the bundled Apache Tomcat dependency. (CVE-2026-41293)

- A broken authentication and session management vulnerability in the bundled Apache Tomcat dependency. (CVE-2026-43512)

- An improper authorization vulnerability in the bundled Apache Tomcat dependency. (CVE-2026-43515)

- Multiple HTTP request smuggling vulnerabilities in the bundled Netty dependency. (CVE-2026-42584, CVE-2026-42585, CVE-2026-33870)

- Multiple injection vulnerabilities in the bundled axios dependency. (CVE-2026-42264, CVE-2026-42035, CVE-2026-42033)

- A denial of service vulnerability in the bundled Netty dependency. (CVE-2026-33871)

- A remote code execution vulnerability in the bundled react-router dependency. (CVE-2026-42211)

- A cross-site scripting (XSS) vulnerability in the bundled turbo-stream dependency. (CVE-2026-34077)

- An information disclosure vulnerability in the bundled Apache Tomcat dependency. (CVE-2026-34487)

- A denial of service vulnerability in the bundled Apache Tomcat dependency. (CVE-2026-41284)

- A denial of service vulnerability in the bundled nth-check dependency. (CVE-2021-3803)

- A business logic vulnerability in the bundled Apache Tomcat dependency. (CVE-2026-43513)

- Multiple denial of service vulnerabilities in the bundled minimatch dependency. (CVE-2026-27903, CVE-2026-27904)

- A denial of service vulnerability in the bundled react-router dependency. (CVE-2026-42342)

- A cryptographic vulnerability in the bundled Apache Tomcat dependency. (CVE-2026-34486)

- A remote code execution vulnerability in the bundled axios dependency. (CVE-2026-44495)

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

According to its self-reported version number, the Atlassian Confluence application running on the remote host is prior to 9.2.21 or 9.3.x prior to 10.2.13. It is, therefore, affected by multiple vulnerabilities, including flaws in bundled third-party dependencies :

- An injection vulnerability in the bundled Apache Tomcat dependency. (CVE-2026-41293)

- A broken authentication and session management vulnerability in the bundled Apache Tomcat dependency. (CVE-2026-43512)

- An injection vulnerability in the bundled Netty dependency. (CVE-2026-42579)

- Multiple HTTP request smuggling vulnerabilities in the bundled Netty dependency. (CVE-2026-42584, CVE-2026-42585)

- An improper authorization vulnerability in the bundled Apache Tomcat dependency. (CVE-2026-43515)

- Multiple denial of service vulnerabilities in the bundled minimatch dependency. (CVE-2026-26996, CVE-2026-27904, CVE-2026-27903)

- A denial of service vulnerability in the bundled Apache Tomcat dependency. (CVE-2026-41284)

- A business logic vulnerability in the bundled Apache Tomcat dependency. (CVE-2026-43513)

- A HTTP request smuggling vulnerability in the bundled ws dependency. (CVE-2026-45736)

- A denial of service vulnerability in the bundled brace-expansion dependency. (CVE-2026-45149)

- A denial of service vulnerability in the bundled Netty dependency. (CVE-2026-42587)

- An information disclosure vulnerability in the bundled Apache Tomcat dependency. (CVE-2026-42498)

Note that the scanner 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 incorrectly parses malformed Transfer-Encoding, enabling request smuggling attacks.
    This vulnerability is fixed in 4.2.13.Final and 4.1.133.Final. (CVE-2026-42585)

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 incorrectly parses malformed Transfer-Encoding, enabling request smuggling attacks.
    This vulnerability is fixed in 4.2.13.Final and 4.1.133.Final. (CVE-2026-42585)

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

ID	Name	Product	Family	Type	Severity
115708	Atlassian Crowd < 7.2.1 Multiple Vulnerabilities	Web App Scanning	Component Vulnerability	Version Based	critical
115704	Atlassian Jira 10.4.x < 11.3.7 Multiple Vulnerabilities	Web App Scanning	Component Vulnerability	Version Based	high
115703	Atlassian Jira < 10.3.22 Multiple Vulnerabilities	Web App Scanning	Component Vulnerability	Version Based	high
115696	Atlassian Confluence 9.3.x < 10.2.13 Multiple Vulnerabilities	Web App Scanning	Component Vulnerability	Version Based	high
115695	Atlassian Confluence < 9.2.21 Multiple Vulnerabilities	Web App Scanning	Component Vulnerability	Version Based	high
457056	Echo: io.netty:netty-codec-http: security update to 4.1.133.Final	Tenable Cloud Security	Echo Local Security Checks	Local	high
457056	Echo: io.netty:netty-codec-http: security update to 4.1.133.Final	Tenable Self-Hosted Container Security	Echo Local Security Checks	Local	high
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
314789	Linux Distros Unpatched Vulnerability : CVE-2026-42585	Nessus	Misc.	Local	high
441362	SCA: security update for io.netty:netty-codec-http (GHSA-38f8-5428-x5cv)	Tenable Cloud Security	SCA Checks	Local	high
441362	SCA: security update for io.netty:netty-codec-http (GHSA-38f8-5428-x5cv)	Tenable Self-Hosted Container Security	SCA Checks	Local	high

Detections

Analytics

CVE-2026-42585

high

Tenable Plugins

critical

high

high

high

high

high

high

high

high

high

critical

medium

medium

high

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high