{"id":"CVE-2026-116740","published":"2026-10-26T22:16:58.390","lastModified":"2026-10-26T22:16:58.390","description":"libcss through 0.9.2 contains a NULL pointer dereference vulnerability in mq_parse_media_query() that allows remote attackers to crash consumers by supplying media lists ending in a comma. Attackers can serve a stylesheet whose @media or @import media list has a trailing comma, causing NetSurf or other parsers to crash.","cvssScore":6.5,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","cwes":["CWE-476"],"vendors":[],"products":[],"references":[{"url":"https://github.com/netsurf-browser/libcss","tags":[]},{"url":"https://github.com/netsurf-browser/libcss/blob/release/0.9.2/src/parse/mq.c#L984","tags":[]},{"url":"https://github.com/netsurf-browser/libcss/commit/006ffc4096040da13690abc380e5f828ec08284d","tags":[]},{"url":"https://hackmd.io/@haindpwn/libcss-media-list-null-deref","tags":[]},{"url":"https://www.vulncheck.com/advisories/libcss-through-0.9.2-null-pointer-dereference-via-media-query-parser","tags":[]}],"exploitRefs":[{"url":"https://github.com/netsurf-browser/libcss","tags":[]},{"url":"https://github.com/netsurf-browser/libcss/blob/release/0.9.2/src/parse/mq.c#L984","tags":[]},{"url":"https://github.com/netsurf-browser/libcss/commit/006ffc4096040da13690abc380e5f828ec08284d","tags":[]}],"hasPoc":true,"ai":null}