{"id":"CVE-2026-116740","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-116740","generatedAt":"2026-10-28T01:01:07.056Z","title":"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.","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.","published":"2026-10-26T22:16:58.000Z","lastModified":"2026-10-27T16:04:23.000Z","status":"Deferred","sourceIdentifier":"disclosure@vulncheck.com","cvss":{"version":"4.0","score":7.1,"severity":"HIGH","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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-476"],"affected":[],"epss":null,"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unscored. Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-26T22:16:58.000Z","detail":{"score":"7.1","severity":"HIGH","publishedAt":"2026-10-26T22:16:58.390Z"},"summary":"New CVE, high severity (CVSS 7.1)."}],"references":[{"url":"https://github.com/netsurf-browser/libcss","source":"disclosure@vulncheck.com"},{"url":"https://github.com/netsurf-browser/libcss/blob/release/0.9.2/src/parse/mq.c#L984","source":"disclosure@vulncheck.com"},{"url":"https://github.com/netsurf-browser/libcss/commit/006ffc4096040da13690abc380e5f828ec08284d","source":"disclosure@vulncheck.com"},{"url":"https://hackmd.io/@haindpwn/libcss-media-list-null-deref","source":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/libcss-through-0.9.2-null-pointer-dereference-via-media-query-parser","source":"disclosure@vulncheck.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-116740","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}