CVE-2026-93565

Io.netty/netty-codec-http: netty rtspdecoder method-token smuggling via trailing control byte

publishedCWE-1035

A flaw was found in Netty RtspDecoder. The `RtspMethods.valueOf()` function incorrectly strips trailing control bytes from method tokens in Real-Time Streaming Protocol (RTSP) requests. A remote attacker can exploit this by sending a specially crafted RTSP request, leading to method-token smuggling. This vulnerability allows an attacker to bypass method-based access controls and can also be used to launder malicious requests through Netty-based RTSP proxies, making them appear legitimate to backend systems.

Technical severity7.5 highCVSS 3.1 · CNA: redhat

Published2026-09-18Source updated 2026-11-06

Collected2026-11-063 attributed sources

Fixes and workarounds

Workaround

See https://github.com/netty/netty/security/advisories/GHSA-h75q-xqrh-59rf for fixed versions and remediation guidance.

Source: CNA: redhat

Affected products and versions

Affected products, source version ranges and reporting authorities
Product	Versions	Authority
Red Hat Build of Apache Camel 3.33.3.SP2 Red Hat `io.netty/netty-codec-http` https://access.redhat.com/downloads/content/package-browser/	≥ 4.1.138.Final-redhat-00001; < * (unaffected, rpm) Other versions: affected	CNA: redhat
Red Hat Build of Debezium 3.6 Red Hat `netty-codec-http` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: unaffected	CNA: redhat
Red Hat build of Keycloak 26.4 Red Hat `rhbk/keycloak-operator-bundle` https://catalog.redhat.com/software/containers/	≥ 26.4.17-2; < * (unaffected, rpm) Other versions: affected	CNA: redhat
Red Hat build of Keycloak 26.4 Red Hat `rhbk/keycloak-rhel9` https://catalog.redhat.com/software/containers/	≥ 26.4-29; < * (unaffected, rpm) Other versions: affected	CNA: redhat
Red Hat build of Keycloak 26.4 Red Hat `rhbk/keycloak-rhel9-operator` https://catalog.redhat.com/software/containers/	≥ 26.4-30; < * (unaffected, rpm) Other versions: affected	CNA: redhat
Red Hat build of Keycloak 26.4.17 Red Hat `netty-codec-http` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: unaffected	CNA: redhat
Red Hat build of Keycloak 26.6 Red Hat `rhbk/keycloak-operator-bundle` https://catalog.redhat.com/software/containers/	≥ 26.6.8-2; < * (unaffected, rpm) Other versions: affected	CNA: redhat
Red Hat build of Keycloak 26.6 Red Hat `rhbk/keycloak-rhel9` https://catalog.redhat.com/software/containers/	≥ 26.6-24; < * (unaffected, rpm) Other versions: affected	CNA: redhat
Red Hat build of Keycloak 26.6 Red Hat `rhbk/keycloak-rhel9-operator` https://catalog.redhat.com/software/containers/	≥ 26.6-24; < * (unaffected, rpm) Other versions: affected	CNA: redhat
Red Hat build of Keycloak 26.6.8 Red Hat `netty-codec-http` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: unaffected	CNA: redhat
Red Hat build of Quarkus 3.27.5.SP2 Red Hat `netty-codec-http` https://access.redhat.com/jbossnetwork/restricted/listSoftware.html	Range not reported Other versions: unaffected	CNA: redhat
Red Hat build of Quarkus 3.33.3.SP2 Red Hat `netty-codec-http` https://access.redhat.com/jbossnetwork/restricted/listSoftware.html	Range not reported Other versions: unaffected	CNA: redhat
Red Hat JBoss Enterprise Application Platform 8.1 Red Hat `netty-codec-http` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: unaffected	CNA: redhat
Red Hat AMQ Broker 7 Red Hat `netty-codec-http` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat
Red Hat AMQ Clients Red Hat `netty-codec-http` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat
Red Hat build of Apache Camel 4 for Quarkus 3 Red Hat `netty-codec-http` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat
Red Hat build of Apache Camel for Spring Boot 4 Red Hat `netty-codec-http` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat
Red Hat build of Apicurio Registry 3 Red Hat `netty-codec-http` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat
Red Hat Data Grid 8 Red Hat `netty-codec-http` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat
Red Hat Fuse 7 Red Hat `netty-codec-http` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: unknown	CNA: redhat
Red Hat JBoss Enterprise Application Platform 7 Red Hat `netty-codec-http` https://access.redhat.com/jbossnetwork/restricted/listSoftware.html	Range not reported Other versions: unknown	CNA: redhat
Red Hat Single Sign-On 7 Red Hat `netty-codec-http` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat

Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.

CVSS assessments

CVSS scores, vectors and reporting authorities
Version / score	Vector	Authority
3.1 / 7.5 high	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N`	CNA: redhat
3.1 / 7.5 high	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N`	NVD: [email protected]

Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

References

https://access.redhat.com/errata/RHSA-2026:69440CNA: redhat · vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:69470CNA: redhat · vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:70257CNA: redhat · vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:83612CNA: redhat · vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:95759CNA: redhat · vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:95760CNA: redhat · vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:95761CNA: redhat · vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:95762CNA: redhat · vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:95887CNA: redhat · vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-93565CNA: redhat · vdb-entry, x_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2536952CNA: redhat · issue-tracking, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:69440[email protected]
https://access.redhat.com/errata/RHSA-2026:69470[email protected]
https://access.redhat.com/errata/RHSA-2026:70257[email protected]
https://access.redhat.com/errata/RHSA-2026:83612[email protected]
https://access.redhat.com/errata/RHSA-2026:95760[email protected]
https://access.redhat.com/errata/RHSA-2026:95761[email protected]
https://access.redhat.com/security/cve/CVE-2026-93565[email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=2536952[email protected]

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