CVE Catalog

CVE-2026-116740

MediumCVSS 6.5
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.33%

26th percentile - higher than 26% of all known CVEs

Summary

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.

Risk Assessment

Potential remote crash of applications (e.g., NetSurf browser) via a crafted stylesheet, leading to denial of service. This may disrupt access to web content.

Recommendation

Update libcss to a version later than 0.9.2 if available, or apply the vendor patch. Until updated, consider validating stylesheets before processing.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS