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CVE-2026-15711

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

Description (CNA)

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 (CNA)

Vendor / productVersions
Red Hat / Red Hat Enterprise Linux 10unaffected 0:3.6.5-3.el10_2.14 before *
Red Hat / Red Hat Enterprise Linux 10.0 Extended Update Supportunaffected 0:3.6.5-3.el10_0.17 before *
Red Hat / Red Hat Enterprise Linux 8unaffected 0:2.62.3-15.el8_10 before *
Red Hat / Red Hat Enterprise Linux 8unaffected 0:2.62.3-15.el8_10 before *
Red Hat / Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Supportunaffected 0:2.62.3-2.el8_4.10 before *
Red Hat / Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-Onunaffected 0:2.62.3-2.el8_4.10 before *
Red Hat / Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Supportunaffected 0:2.62.3-2.el8_6.10 before *
Red Hat / Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-Onunaffected 0:2.62.3-2.el8_6.10 before *
Red Hat / Red Hat Enterprise Linux 8.8 Telecommunications Update Serviceunaffected 0:2.62.3-3.el8_8.11 before *
Red Hat / Red Hat Enterprise Linux 8.8 Update Services for SAP Solutionsunaffected 0:2.62.3-3.el8_8.11 before *
Red Hat / Red Hat Enterprise Linux 9unaffected 0:2.72.0-16.el9_8.3 before *
Red Hat / Red Hat Enterprise Linux 9.2 Update Services for SAP Solutionsunaffected 0:2.72.0-8.el9_2.13 before *
Red Hat / Red Hat Enterprise Linux 9.4 Update Services for SAP Solutionsunaffected 0:2.72.0-8.el9_4.12 before *
Red Hat / Red Hat Enterprise Linux 9.6 Extended Update Supportunaffected 0:2.72.0-10.el9_6.9 before *
Red Hat / Red Hat Enterprise Linux 6unknown
Red Hat / Red Hat Enterprise Linux 7unknown

CWE

CWE-770

References

ADP enrichment

CISA-ADP

No English description supplied.