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CVE-2026-93565

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

Published
Last modified
published
Not listed in CISA KEV
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: yes
  • Technical impact: partial

Summary

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.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: yes · Technical impact: partial

  3. Record last updated

Affected versions

  • io.netty/netty-codec-http

    Version range not reported

  • netty-codec-http

    Version range not reported

  • netty-codec-http

    Version range not reported

  • netty-codec-http

    Version range not reported

  • netty-codec-http

    Version range not reported

  • netty-codec-http

    Version range not reported

  • netty-codec-http

    Version range not reported

  • netty-codec-http

    Version range not reported

  • netty-codec-http

    Version range not reported

  • netty-codec-http

    Version range not reported

  • netty-codec-http

    Version range not reported

  • netty-codec-http

    Version range not reported

  • netty-codec-http

    Version range not reported

  • netty-codec-http

    Version range not reported

  • netty-codec-http

    Version range not reported

References 6

access.redhat.com

bugzilla.redhat.com