Bug 2561440 (CVE-2026-116740) - CVE-2026-116740 libcss: libcss: Denial of Service via media list trailing comma
Summary: CVE-2026-116740 libcss: libcss: Denial of Service via media list trailing comma
Keywords:
Status: NEW
Alias: CVE-2026-116740
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-10-26 22:32 UTC by OSIDB Bzimport
Modified: 2026-10-26 22:42 UTC (History)
0 users

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

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Description OSIDB Bzimport 2026-10-26 22:32:25 UTC 
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.
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