Source: libsoup3 Version: 3.6.6-1 Severity: important Tags: security upstream Forwarded: https://gitlab.gnome.org/GNOME/libsoup/-/issues/515 X-Debbugs-Cc: [email protected], Debian Security Team <[email protected]>
Hi, The following vulnerability was published for libsoup3. CVE-2026-15711[0]: | A vulnerability was found in libsoup's WebSocket frame parsing | implementation. The library fails to validate length rules specified | in RFC 6455 ยง5.5, 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. If you fix the vulnerability please also make sure to include the CVE (Common Vulnerabilities & Exposures) id in your changelog entry. For further information see: [0] https://security-tracker.debian.org/tracker/CVE-2026-15711 https://www.cve.org/CVERecord?id=CVE-2026-15711 [1] https://gitlab.gnome.org/GNOME/libsoup/-/issues/515 Please adjust the affected versions in the BTS as needed. Regards, Salvatore
