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Allocation of Resources Without Limits or Throttling The advisory has been revoked - it doesn't affect any version of package libsoup3-doc  (opens in a new tab)

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EPSS
0.75% (53rd percentile)

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  • Snyk IDSNYK-RHEL10-LIBSOUP3DOC-17974912
  • published15 Jul 2026
  • disclosed14 Jul 2026
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Introduced: 14 Jul 2026

CVE-2026-15711  (opens in a new tab)
CWE-770  (opens in a new tab)

Amendment

The Red Hat security team deemed this advisory irrelevant for RHEL:10.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libsoup3-doc package and not the libsoup3-doc package as distributed by RHEL.

A vulnerability was found in libsoup's WebSocket frame parsing implementation. The library fails to validate length rules specified in RFC 6455 §5.5, which mandates that all WebSocket control frames (e.g., PING, PONG, CLOSE) contain a payload of 125 bytes or less. A remote, unauthenticated attacker can exploit this by sending a non-compliant, oversized control frame. Because the parser handles this protocol violation improperly instead of throwing an immediate connection termination error, it triggers a internal processing crash, resulting in a remote denial of service (DoS) for applications utilizing libsoup WebSockets.