HIGH 7.1 NVD
CVE-2026-116740
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 me
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.
References
- https://github.com/netsurf-browser/libcss
- https://github.com/netsurf-browser/libcss/blob/release/0.9.2/src/parse/mq.c#L984
- https://github.com/netsurf-browser/libcss/commit/006ffc4096040da13690abc380e5f828ec08284d
- https://hackmd.io/@haindpwn/libcss-media-list-null-deref
- https://www.vulncheck.com/advisories/libcss-through-0.9.2-null-pointer-dereference-via-med
This high severity vulnerability with a CVSS score of 7.1 was published on 2026-10-26 via NVD.
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