{"id":"CVE-2026-116740","aliases":[],"title":"libcss through 0.9.2 NULL Pointer Dereference via Media-Query Parser","titleSource":"VulnCheck","descriptionSource":"VulnCheck","products":[{"vendor":"netsurf-browser","name":"libcss","platforms":[],"versions":[{"version":"0","status":"affected","lessThanOrEqual":"0.9.2","versionType":"custom"}],"defaultStatus":"unaffected","source":"VulnCheck","url":"https://www.cve.org/CVERecord?id=CVE-2026-116740"}],"remediation":[],"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to crash.","severity":"high","score":7.1,"published":"2026-10-26T21:52:39.177Z","modified":"2026-10-26T21:52:39.177Z","withdrawn":false,"knownExploited":false,"affected":[],"references":["https://github.com/netsurf-browser/libcss/commit/006ffc4096040da13690abc380e5f828ec08284d","https://github.com/netsurf-browser/libcss","https://github.com/netsurf-browser/libcss/blob/release/0.9.2/src/parse/mq.c#L984","https://hackmd.io/@haindpwn/libcss-media-list-null-deref","https://www.vulncheck.com/advisories/libcss-through-0.9.2-null-pointer-dereference-via-media-query-parser"],"sources":[{"name":"CVE","id":"CVE-2026-116740","modified":"2026-10-26T21:52:39.177Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-116740"}],"assessments":[{"source":"VulnCheck","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","score":7.1},{"source":"VulnCheck","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","score":6.5}],"sourceAffected":[],"kev":{"status":"not-listed","checkedAt":"2026-10-29T05:15:30.396Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[]}