CVE-2026-116740: high-severity vulnerability in netsurf-browser libcss
libcss through 0.9.2 NULL Pointer Dereference via Media-Query Parser
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.1epss 0.3%
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.
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
Affected products
netsurf-browser · libcssReferences
https://github.com/netsurf-browser/libcsshttps://github.com/netsurf-browser/libcss/blob/release/0.9.2/src/parse/mq.c#L984https://github.com/netsurf-browser/libcss/commit/006ffc4096040da13690abc380e5f828ec08284dhttps://hackmd.io/@haindpwn/libcss-media-list-null-derefhttps://www.vulncheck.com/advisories/libcss-through-0.9.2-null-pointer-dereference-via-media-query-parser