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CVE PROGRAM SOURCE RECORD7.5 High

CVE-2026-15711

Libsoup: soupwebsocketconnection: libsoup: websocket remote denial of service via oversized control frame protocol violation

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Status
Published
Published
Updated
Assigning organization
redhat

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Red Hat Red Hat Enterprise Linux 10

Default version status: affected

  • 0:3.6.5-3.el10_2.14 to < *unaffected

Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support

Default version status: affected

  • 0:3.6.5-3.el10_0.17 to < *unaffected

Red Hat Red Hat Enterprise Linux 8

Default version status: affected

  • 0:2.62.3-15.el8_10 to < *unaffected

Red Hat Red Hat Enterprise Linux 8

Default version status: affected

  • 0:2.62.3-15.el8_10 to < *unaffected

Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support

Default version status: affected

  • 0:2.62.3-2.el8_4.10 to < *unaffected

Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On

Default version status: affected

  • 0:2.62.3-2.el8_4.10 to < *unaffected

Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support

Default version status: affected

  • 0:2.62.3-2.el8_6.10 to < *unaffected

Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On

Default version status: affected

  • 0:2.62.3-2.el8_6.10 to < *unaffected

Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service

Default version status: affected

  • 0:2.62.3-3.el8_8.11 to < *unaffected

Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions

Default version status: affected

  • 0:2.62.3-3.el8_8.11 to < *unaffected

Red Hat Red Hat Enterprise Linux 9

Default version status: affected

  • 0:2.72.0-16.el9_8.3 to < *unaffected

Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Default version status: affected

  • 0:2.72.0-8.el9_2.13 to < *unaffected

Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

Default version status: affected

  • 0:2.72.0-8.el9_4.12 to < *unaffected

Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support

Default version status: affected

  • 0:2.72.0-10.el9_6.9 to < *unaffected

Red Hat Red Hat Enterprise Linux 6

Default version status: unknown

Red Hat Red Hat Enterprise Linux 7

Default version status: unknown

References