Netty is a network application framework for development of protocol servers and clients. Prior to 4.1.136.Final and 4.2.16.Final, Netty SPDY header decoding continues inflating zlib-compressed header blocks after the raw header parser has exceeded `maxHeaderSize` and marked the frame truncated in `SpdyFrameCodec`, allowing a remote peer to send a small compressed `HEADERS` block that expands into much larger raw header data and causes compression-amplified CPU and allocation churn. This issue is fixed in versions 4.1.136.Final and 4.2.16.Final.

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

  - Netty is a network application framework for development of protocol servers and clients. Prior to
    4.1.136.Final and 4.2.16.Final, Netty SPDY header decoding continues inflating zlib-compressed header
    blocks after the raw header parser has exceeded `maxHeaderSize` and marked the frame truncated in
    `SpdyFrameCodec`, allowing a remote peer to send a small compressed `HEADERS` block that expands into much
    larger raw header data and causes compression-amplified CPU and allocation churn. This issue is fixed in
    versions 4.1.136.Final and 4.2.16.Final. (CVE-2026-55833)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:70228 advisory.

    Red Hat JBoss Enterprise Application Platform 8 is a platform for Java applications based on the WildFly     application runtime. This release of Red Hat JBoss  Enterprise Application Platform 8.1.8 serves as a     replacement for Red Hat JBoss Enterprise Application Platform 8.1.7, and includes bug fixes and     enhancements. See the Red Hat JBoss Enterprise Application Platform 8.1.8 Release Notes for information     about the most significant bug fixes and enhancements included in this release.

    Security Fix(es):

    * jackson-core: jackson-core: Denial of Service via incomplete fix in async JSON parser [eap-8.1.z]     (CVE-2026-68494)

    * netty-codec-http2: Netty: Denial of Service via memory exhaustion in SPDY-to-HTTP codec [eap-8.1.z]     (CVE-2026-56745)

    * netty-handler: Netty: TLS hostname verification bypass via OpenSSL client path misconfiguration     [eap-8.1.z] (CVE-2026-62243)

    * bcpg-jdk18on: Bouncy Castle for Java: Denial of Service due to unbounded OpenPGP user-attribute     subpacket length [eap-8.1.z] (CVE-2026-59649)

    * jackson-databind: jackson-databind: Ignored properties can be unexpectedly modified [eap-8.1.z]     (CVE-2026-54515)

    * jackson-databind: Jackson-databind: Privilege escalation via improper handling of @JsonUnwrapped     properties [eap-8.1.z] (CVE-2026-59889)

    * netty-codec-dns: Netty: Denial of Service via Memory Leak in DNS Record Decoder with Malformed Domain     Names [eap-8.1.z] (CVE-2026-73508)

    * jboss-eap.1-runtime-maven-repository.zip: jackson-core: Denial of Service via incomplete fix in async     JSON parser [eap-8.1.z] (CVE-2026-68494)

    * jboss-eap-runtime-maven-repository.zip: jackson-core: Denial of Service via incomplete fix in async JSON     parser [eap-8.1.z] (CVE-2026-68494)

    * bcprov-jdk18on: unbounded PGP AEAD chunk size leads to pre-auth resource exhaustion [eap-8.1.z]     (CVE-2026-3505)

    * brace-expansion: brace-expansion: Denial of Service via unbounded intermediate arrays [eap-8.1.z]     (CVE-2026-69152)

    * netty-codec-http: Netty: Memory exhaustion in netty-codec-http (decompression bomb) [eap-8.1.z]     (CVE-2026-59899)

    * netty-codec-http: Netty: Security control bypass allows unauthorized requests via null origin header     [eap-8.1.z] (CVE-2026-56746)

    * netty-codec-http: Netty: Denial of Service via memory exhaustion in SPDY-to-HTTP codec [eap-8.1.z]     (CVE-2026-56745)

    * netty-codec-http: Netty: Denial of Service via SPDY SETTINGS frame processing [eap-8.1.z]     (CVE-2026-55831)

    * netty-codec-http: Netty: Denial of Service via SPDY header decompression amplification [eap-8.1.z]     (CVE-2026-55833)

    * jackson-databind: Jackson-databind: Security bypass allows arbitrary code execution [eap-8.1.z]     (CVE-2026-54513)

    * jackson-databind: jackson-databind: Arbitrary code execution via PolymorphicTypeValidator bypass     [eap-8.1.z] (CVE-2026-54512)

    * undertow-core: Undertow:HTTP request smuggling via oversized chunk-size bit overlap [eap-8.1.z]     (CVE-2026-14180)

    * artemis-server: artemis-server: Pre-auth topology disclosure via CORE SUBSCRIBE_TOPOLOGY_V2 on channel0     [eap-8.1.z] (CVE-2026-49363)

    * undertow-websockets-jsr: Undertow: Pre-Auth DoS on websocket endpoint with @ServerEndpoint class with     any @OnMessage method [eap-8.1.z] (CVE-2026-15565)

    * wildfly-iiop-openjdk: Wildfly: Pre-auth denial of service on the IIOP listener [eap-8.1.z]     (CVE-2026-15567)

    * cxf-rt-transports-jms: Apache CXF: Arbitrary code execution via untrusted JMS configuration [eap-8.1.z]     (CVE-2026-50632)

    * cxf-core: Apache CXF: Information disclosure via out-of-band external entity resolution due to missing     JAXP hardening [eap-8.1.z] (CVE-2026-49875)

    * wildfly-elytron-asn1: Unbounded Memory Allocation in WildFly Elytron ASN.1 DERDecoder via Crafted DER     Payload [eap-8.1.z] (CVE-2026-10832)

    * cxf-rt-transports-jms: Apache CXF: Remote Code Execution via untrusted JMS configuration [eap-8.1.z]     (CVE-2026-44417)

    * wildfly-elytron-realm-token: parameter injection in EAP's elytron oauth2 [eap-8.1.z] (CVE-2026-85511)

    * jakarta.faces: mojarra: Unauthenticated RCE in EAP JSF applications via EL injection in ui:include     [eap-8.1.z] (CVE-2026-46581)

    * wildfly-iiop-openjdk: Missing authentication on EAP's IIOP NameService leads to MITM or DoS [eap-8.1.z]     (CVE-2026-15563)

    * jboss-remoting: jboss-remoting: integer overflow in MessageReader leads to pre-authentication denial of     service [eap-8.1.z] (CVE-2026-15562)

    * undertow-core: OOM via missing limits in chunked trailer in EAP's Undertow [eap-8.1.z] (CVE-2026-15561)

    * openjdk-orb: unauthed class loading via IIOP in EAP [eap-8.1.z] (CVE-2026-15560)

    * artemis-server: Apache Artemis  session hijack via missing authentication [eap-8.1.z]     (CVE-2026-57967)

    * wildfly-clustering-infinispan-marshalling: Jboss Deserialization RCE via Unfiltered River Unmarshaller     [eap-8.1.z] (CVE-2026-15555)

    * undertow-core: Undertow: Authentication Bypass via AJP ssl_cert/is_ssl Forgery [eap-8.1.z]     (CVE-2026-15554)

    * jgroups: artemis cluster password leak via jgroups spoof [eap-8.1.z] (CVE-2026-49364)

    * artemis-server: artemis core protocol permits unauthed queue creation [eap-8.1.z] (CVE-2026-49362)

    * artemis-server: artemis messaging handlers in Red Hat EAP permit deserialization by default [eap-8.1.z]     (CVE-2026-86404)

    * undertow-core: Undertow: Denial of Service via WebSocket permessage-deflate processing [eap-8.1.z]     (CVE-2026-5680)

    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 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:70230 advisory.

    Red Hat JBoss Enterprise Application Platform 8 is a platform for Java applications based on the WildFly     application runtime. This release of Red Hat JBoss  Enterprise Application Platform 8.1.8 serves as a     replacement for Red Hat JBoss Enterprise Application Platform 8.1.7, and includes bug fixes and     enhancements. See the Red Hat JBoss Enterprise Application Platform 8.1.8 Release Notes for information     about the most significant bug fixes and enhancements included in this release.

    Security Fix(es):

    * jackson-core: jackson-core: Denial of Service via incomplete fix in async JSON parser [eap-8.1.z]     (CVE-2026-68494)

    * netty-codec-http2: Netty: Denial of Service via memory exhaustion in SPDY-to-HTTP codec [eap-8.1.z]     (CVE-2026-56745)

    * netty-handler: Netty: TLS hostname verification bypass via OpenSSL client path misconfiguration     [eap-8.1.z] (CVE-2026-62243)

    * bcpg-jdk18on: Bouncy Castle for Java: Denial of Service due to unbounded OpenPGP user-attribute     subpacket length [eap-8.1.z] (CVE-2026-59649)

    * jackson-databind: jackson-databind: Ignored properties can be unexpectedly modified [eap-8.1.z]     (CVE-2026-54515)

    * jackson-databind: Jackson-databind: Privilege escalation via improper handling of @JsonUnwrapped     properties [eap-8.1.z] (CVE-2026-59889)

    * netty-codec-dns: Netty: Denial of Service via Memory Leak in DNS Record Decoder with Malformed Domain     Names [eap-8.1.z] (CVE-2026-73508)

    * jboss-eap.1-runtime-maven-repository.zip: jackson-core: Denial of Service via incomplete fix in async     JSON parser [eap-8.1.z] (CVE-2026-68494)

    * jboss-eap-runtime-maven-repository.zip: jackson-core: Denial of Service via incomplete fix in async JSON     parser [eap-8.1.z] (CVE-2026-68494)

    * bcprov-jdk18on: unbounded PGP AEAD chunk size leads to pre-auth resource exhaustion [eap-8.1.z]     (CVE-2026-3505)

    * brace-expansion: brace-expansion: Denial of Service via unbounded intermediate arrays [eap-8.1.z]     (CVE-2026-69152)

    * netty-codec-http: Netty: Memory exhaustion in netty-codec-http (decompression bomb) [eap-8.1.z]     (CVE-2026-59899)

    * netty-codec-http: Netty: Security control bypass allows unauthorized requests via null origin header     [eap-8.1.z] (CVE-2026-56746)

    * netty-codec-http: Netty: Denial of Service via memory exhaustion in SPDY-to-HTTP codec [eap-8.1.z]     (CVE-2026-56745)

    * netty-codec-http: Netty: Denial of Service via SPDY SETTINGS frame processing [eap-8.1.z]     (CVE-2026-55831)

    * netty-codec-http: Netty: Denial of Service via SPDY header decompression amplification [eap-8.1.z]     (CVE-2026-55833)

    * jackson-databind: Jackson-databind: Security bypass allows arbitrary code execution [eap-8.1.z]     (CVE-2026-54513)

    * jackson-databind: jackson-databind: Arbitrary code execution via PolymorphicTypeValidator bypass     [eap-8.1.z] (CVE-2026-54512)

    * undertow-core: Undertow:HTTP request smuggling via oversized chunk-size bit overlap [eap-8.1.z]     (CVE-2026-14180)

    * artemis-server: artemis-server: Pre-auth topology disclosure via CORE SUBSCRIBE_TOPOLOGY_V2 on channel0     [eap-8.1.z] (CVE-2026-49363)

    * undertow-websockets-jsr: Undertow: Pre-Auth DoS on websocket endpoint with @ServerEndpoint class with     any @OnMessage method [eap-8.1.z] (CVE-2026-15565)

    * wildfly-iiop-openjdk: Wildfly: Pre-auth denial of service on the IIOP listener [eap-8.1.z]     (CVE-2026-15567)

    * cxf-rt-transports-jms: Apache CXF: Arbitrary code execution via untrusted JMS configuration [eap-8.1.z]     (CVE-2026-50632)

    * cxf-core: Apache CXF: Information disclosure via out-of-band external entity resolution due to missing     JAXP hardening [eap-8.1.z] (CVE-2026-49875)

    * wildfly-elytron-asn1: Unbounded Memory Allocation in WildFly Elytron ASN.1 DERDecoder via Crafted DER     Payload [eap-8.1.z] (CVE-2026-10832)

    * cxf-rt-transports-jms: Apache CXF: Remote Code Execution via untrusted JMS configuration [eap-8.1.z]     (CVE-2026-44417)

    * wildfly-elytron-realm-token: parameter injection in EAP's elytron oauth2 [eap-8.1.z] (CVE-2026-85511)

    * jakarta.faces: mojarra: Unauthenticated RCE in EAP JSF applications via EL injection in ui:include     [eap-8.1.z] (CVE-2026-46581)

    * wildfly-iiop-openjdk: Missing authentication on EAP's IIOP NameService leads to MITM or DoS [eap-8.1.z]     (CVE-2026-15563)

    * jboss-remoting: jboss-remoting: integer overflow in MessageReader leads to pre-authentication denial of     service [eap-8.1.z] (CVE-2026-15562)

    * undertow-core: OOM via missing limits in chunked trailer in EAP's Undertow [eap-8.1.z] (CVE-2026-15561)

    * openjdk-orb: unauthed class loading via IIOP in EAP [eap-8.1.z] (CVE-2026-15560)

    * artemis-server: Apache Artemis  session hijack via missing authentication [eap-8.1.z]     (CVE-2026-57967)

    * wildfly-clustering-infinispan-marshalling: Jboss Deserialization RCE via Unfiltered River Unmarshaller     [eap-8.1.z] (CVE-2026-15555)

    * undertow-core: Undertow: Authentication Bypass via AJP ssl_cert/is_ssl Forgery [eap-8.1.z]     (CVE-2026-15554)

    * jgroups: artemis cluster password leak via jgroups spoof [eap-8.1.z] (CVE-2026-49364)

    * artemis-server: artemis core protocol permits unauthed queue creation [eap-8.1.z] (CVE-2026-49362)

    * artemis-server: artemis messaging handlers in Red Hat EAP permit deserialization by default [eap-8.1.z]     (CVE-2026-86404)

    * undertow-core: Undertow: Denial of Service via WebSocket permessage-deflate processing [eap-8.1.z]     (CVE-2026-5680)

    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 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:70229 advisory.

    Red Hat JBoss Enterprise Application Platform 8 is a platform for Java applications based on the WildFly     application runtime. This release of Red Hat JBoss  Enterprise Application Platform 8.1.8 serves as a     replacement for Red Hat JBoss Enterprise Application Platform 8.1.7, and includes bug fixes and     enhancements. See the Red Hat JBoss Enterprise Application Platform 8.1.8 Release Notes for information     about the most significant bug fixes and enhancements included in this release.

    Security Fix(es):

    * jackson-core: jackson-core: Denial of Service via incomplete fix in async JSON parser [eap-8.1.z]     (CVE-2026-68494)

    * netty-codec-http2: Netty: Denial of Service via memory exhaustion in SPDY-to-HTTP codec [eap-8.1.z]     (CVE-2026-56745)

    * netty-handler: Netty: TLS hostname verification bypass via OpenSSL client path misconfiguration     [eap-8.1.z] (CVE-2026-62243)

    * bcpg-jdk18on: Bouncy Castle for Java: Denial of Service due to unbounded OpenPGP user-attribute     subpacket length [eap-8.1.z] (CVE-2026-59649)

    * jackson-databind: jackson-databind: Ignored properties can be unexpectedly modified [eap-8.1.z]     (CVE-2026-54515)

    * jackson-databind: Jackson-databind: Privilege escalation via improper handling of @JsonUnwrapped     properties [eap-8.1.z] (CVE-2026-59889)

    * netty-codec-dns: Netty: Denial of Service via Memory Leak in DNS Record Decoder with Malformed Domain     Names [eap-8.1.z] (CVE-2026-73508)

    * jboss-eap.1-runtime-maven-repository.zip: jackson-core: Denial of Service via incomplete fix in async     JSON parser [eap-8.1.z] (CVE-2026-68494)

    * jboss-eap-runtime-maven-repository.zip: jackson-core: Denial of Service via incomplete fix in async JSON     parser [eap-8.1.z] (CVE-2026-68494)

    * bcprov-jdk18on: unbounded PGP AEAD chunk size leads to pre-auth resource exhaustion [eap-8.1.z]     (CVE-2026-3505)

    * brace-expansion: brace-expansion: Denial of Service via unbounded intermediate arrays [eap-8.1.z]     (CVE-2026-69152)

    * netty-codec-http: Netty: Memory exhaustion in netty-codec-http (decompression bomb) [eap-8.1.z]     (CVE-2026-59899)

    * netty-codec-http: Netty: Security control bypass allows unauthorized requests via null origin header     [eap-8.1.z] (CVE-2026-56746)

    * netty-codec-http: Netty: Denial of Service via memory exhaustion in SPDY-to-HTTP codec [eap-8.1.z]     (CVE-2026-56745)

    * netty-codec-http: Netty: Denial of Service via SPDY SETTINGS frame processing [eap-8.1.z]     (CVE-2026-55831)

    * netty-codec-http: Netty: Denial of Service via SPDY header decompression amplification [eap-8.1.z]     (CVE-2026-55833)

    * jackson-databind: Jackson-databind: Security bypass allows arbitrary code execution [eap-8.1.z]     (CVE-2026-54513)

    * jackson-databind: jackson-databind: Arbitrary code execution via PolymorphicTypeValidator bypass     [eap-8.1.z] (CVE-2026-54512)

    * undertow-core: Undertow:HTTP request smuggling via oversized chunk-size bit overlap [eap-8.1.z]     (CVE-2026-14180)

    * artemis-server: artemis-server: Pre-auth topology disclosure via CORE SUBSCRIBE_TOPOLOGY_V2 on channel0     [eap-8.1.z] (CVE-2026-49363)

    * undertow-websockets-jsr: Undertow: Pre-Auth DoS on websocket endpoint with @ServerEndpoint class with     any @OnMessage method [eap-8.1.z] (CVE-2026-15565)

    * wildfly-iiop-openjdk: Wildfly: Pre-auth denial of service on the IIOP listener [eap-8.1.z]     (CVE-2026-15567)

    * cxf-rt-transports-jms: Apache CXF: Arbitrary code execution via untrusted JMS configuration [eap-8.1.z]     (CVE-2026-50632)

    * cxf-core: Apache CXF: Information disclosure via out-of-band external entity resolution due to missing     JAXP hardening [eap-8.1.z] (CVE-2026-49875)

    * wildfly-elytron-asn1: Unbounded Memory Allocation in WildFly Elytron ASN.1 DERDecoder via Crafted DER     Payload [eap-8.1.z] (CVE-2026-10832)

    * cxf-rt-transports-jms: Apache CXF: Remote Code Execution via untrusted JMS configuration [eap-8.1.z]     (CVE-2026-44417)

    * wildfly-elytron-realm-token: parameter injection in EAP's elytron oauth2 [eap-8.1.z] (CVE-2026-85511)

    * jakarta.faces: mojarra: Unauthenticated RCE in EAP JSF applications via EL injection in ui:include     [eap-8.1.z] (CVE-2026-46581)

    * wildfly-iiop-openjdk: Missing authentication on EAP's IIOP NameService leads to MITM or DoS [eap-8.1.z]     (CVE-2026-15563)

    * jboss-remoting: jboss-remoting: integer overflow in MessageReader leads to pre-authentication denial of     service [eap-8.1.z] (CVE-2026-15562)

    * undertow-core: OOM via missing limits in chunked trailer in EAP's Undertow [eap-8.1.z] (CVE-2026-15561)

    * openjdk-orb: unauthed class loading via IIOP in EAP [eap-8.1.z] (CVE-2026-15560)

    * artemis-server: Apache Artemis  session hijack via missing authentication [eap-8.1.z]     (CVE-2026-57967)

    * wildfly-clustering-infinispan-marshalling: Jboss Deserialization RCE via Unfiltered River Unmarshaller     [eap-8.1.z] (CVE-2026-15555)

    * undertow-core: Undertow: Authentication Bypass via AJP ssl_cert/is_ssl Forgery [eap-8.1.z]     (CVE-2026-15554)

    * jgroups: artemis cluster password leak via jgroups spoof [eap-8.1.z] (CVE-2026-49364)

    * artemis-server: artemis core protocol permits unauthed queue creation [eap-8.1.z] (CVE-2026-49362)

    * artemis-server: artemis messaging handlers in Red Hat EAP permit deserialization by default [eap-8.1.z]     (CVE-2026-86404)

    * undertow-core: Undertow: Denial of Service via WebSocket permessage-deflate processing [eap-8.1.z]     (CVE-2026-5680)

    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-2026:3482-1 advisory.

    Upgrade netty to upstream version 4.1.136 and netty-tcnative to version 2.0.80 Final.

    Security issues fixed

    - CVE-2026-44891: memory exhaustion in `io.netty:netty-codec-stomp` (bsc#1271435).
    - CVE-2026-55831: resource exhaustion/DoS in `io.netty:netty-codec-http` (bsc#1271960).
    - CVE-2026-55833: zip bomb in `io.netty:netty-codec-http` (bsc#1271961).
    - CVE-2026-55851: memory exhaustion in `io.netty:netty-codec-haproxy` (bsc#1272253).
    - CVE-2026-56745: memory exhaustion in `io.netty:netty-codec-http` (bsc#1272254).
    - CVE-2026-56746: improper access control in `io.netty:netty-codec-http` (CORS) (bsc#1272255).
    - CVE-2026-56817: insecure defaults in XML parsing in `io.netty:netty-codec-xml` (bsc#1272257).
    - CVE-2026-56818: memory leak in `io.netty:netty-codec-redis` (bsc#1272603).
    - CVE-2026-56819: memory leak in `io.netty:netty-codec-http2` (bsc#1272258).
    - CVE-2026-56820: improper certificate validation in `io.netty:netty-handler-ssl-ocsp` (bsc#1272259).
    - CVE-2026-56821: improper certificate revocation check in `io.netty:netty-handler-ssl-ocsp`     (bsc#1272299).
    - CVE-2026-56822: time-of-check/time-of-use in `io.netty:netty-handler-ssl-ocsp` (bsc#1272300).
    - CVE-2026-59898: protocol version confusion in `io.netty:netty-codec-http` (websocket) (bsc#1272302).
    - CVE-2026-59899: memory exhaustion in `io.netty:netty-codec-http` (bsc#1272301).
    - CVE-2026-59900: improper header neutralization in `io.netty:netty-codec-http2` (bsc#1272303).
    - CVE-2026-59901: infinite loop in `io.netty:netty-codec-compression` (bzip2) (bsc#1272304).
    - CVE-2026-59919: improper CR/LF neutralization in `io.netty:netty-codec-haproxy` (bsc#1272305).
    - CVE-2026-59920: improper CR/LF neutrolization in `io.netty:netty-codec-stomp` (bsc#1272306).
    - CVE-2026-59921: improper CR/LF neutralization in `io.netty:netty-codec-http` (multipart) (bsc#1272307).
    - Memory leak in `io.netty:netty-codec-dns`  (bsc#1272519).
    - Uncontrolled resource consumption in `io.netty:netty-codec-xml` (bsc#1272518).

    Other updates and bugfixes:

    - Upgrade to upstream version 4.1.136:
      - SingleThreadEventExecutor: document Throwable safety contract         on run()
      - Make HTTP/2 frame hashCode consistent with equals
      - Add BlockHound exception for DnsQueryIdSpace (#16896)
      - FlowControlHandler: Fix autoRead behavior
      - Fix incorrect bounds in error message of         HpackDecoder.setMaxHeaderListSize
      - MQTT: Fix MQTT decoder size check after variable header replay
      - MQTT: Make the decodeProperties early-REPLAY check actually         fire
      - Reject control characters at the boundary of HTTP method names         (#16723)
      - Update to latest tcnative release
      - Fix HTTP 2 PUSH_PROMISE stream association validation
      - Fix GZIP FEXTRA extra-field handling in JdkZlibDecoder
      - Add opt-in validation of mandatory pseudo-header fields for         HTTP/2
      - Strictly validate MQTT UTF-8 Encoded String (#16939)
      - Stop DateFormatter trailing token from running past the parse         end
      - IpFilter: Deprecate constructor which use accept by default
      - Add RFC 10008 QUERY Method support (#16966)
      - Correctly release and fail queued traffic-shaping writes on         close (#16959)
      - FlowControlHandler: respect auto-read when toggled while         dequeueing
      - IdleStateHandler: reset firstWriter/ReaderIdleEvent in         resetWriteTimeout/resetReadTimeout (#16982)
      - Fix typo in AbstractSniHandler Javadoc
      - Reconcile AbstractCoalescingBufferQueue readableBytes when it         drains, and fail stuck HTTP/2 streams instead of spinning         empty DATA frames
      - Reject control characters at the boundary of the HTTP version         token (#16971)
      - Reset UTF-8 decode state on CR in StompSubframeDecoder
      - HTTP2: Pass the correct number of arguments when logging         goaway       + FastLz: Guard decompression against truncated input (#17000)       + Fix propagation of startTls for client SslContext handler       + Reject non-token characters in HTTP/2 header names       + Update lz4-java to 1.11.1       + Pin github actions to reduce risk (#17043)       + Merge branches from forks (#17063)

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

  - Netty is a network application framework for development of protocol servers and clients. Prior to     4.1.136.Final and 4.2.16.Final, Netty SPDY header decoding continues inflating zlib-compressed header     blocks after the raw header parser has exceeded `maxHeaderSize` and marked the frame truncated in     `SpdyFrameCodec`, allowing a remote peer to send a small compressed `HEADERS` block that expands into much     larger raw header data and causes compression-amplified CPU and allocation churn. This issue is fixed in     versions 4.1.136.Final and 4.2.16.Final. (CVE-2026-55833)

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

ID	Name	Product	Family	Type	Severity
465355	Echo: io.netty:netty-codec-http: security update to 4.1.136.Final	Tenable Cloud Security	Echo Local Security Checks	Local	high
465355	Echo: io.netty:netty-codec-http: security update to 4.1.136.Final	Tenable Self-Hosted Container Security	Echo Local Security Checks	Local	high
348800	RHEL 8 : Red Hat JBoss Enterprise Application Platform 8.1.8 (RHSA-2026:70228)	Nessus	Red Hat Local Security Checks	Local	high
348794	RHEL 10 : Red Hat JBoss Enterprise Application Platform 8.1.8 (RHSA-2026:70230)	Nessus	Red Hat Local Security Checks	Local	high
348793	RHEL 9 : Red Hat JBoss Enterprise Application Platform 8.1.8 (RHSA-2026:70229)	Nessus	Red Hat Local Security Checks	Local	high
332130	SUSE SLED15 / SLES15 Security Update : netty, netty-tcnative (SUSE-SU-2026:3482-1)	Nessus	SuSE Local Security Checks	Local	high
329586	Linux Distros Unpatched Vulnerability : CVE-2026-55833	Nessus	Misc.	Local	high
445207	SCA: security update for io.netty:netty-codec-http (GHSA-mvh2-crg5-v77c)	Tenable Cloud Security	SCA Checks	Local	high
445207	SCA: security update for io.netty:netty-codec-http (GHSA-mvh2-crg5-v77c)	Tenable Self-Hosted Container Security	SCA Checks	Local	high

Detections

Analytics

CVE-2026-55833

high

Tenable Plugins

high

high

high

high

high

high

high

high

high