Bug 2444587 (CVE-2026-20031) - CVE-2026-20031 ClamAV: improper error handling when splitting UTF-8 strings in the HTML Cascading Style Sheets (CSS) module
Summary: CVE-2026-20031 ClamAV: improper error handling when splitting UTF-8 strings i...
Keywords:
Status: NEW
Alias: CVE-2026-20031
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: 2444609 2444610
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-03-04 18:01 UTC by OSIDB Bzimport
Modified: 2026-03-04 19:32 UTC (History)
0 users

Fixed In Version:
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Description OSIDB Bzimport 2026-03-04 18:01:32 UTC 
A vulnerability in the HTML Cascading Style Sheets (CSS) module of ClamAV could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.

This vulnerability is due to improper error handling when splitting UTF-8 strings. An attacker could exploit this vulnerability by submitting a crafted HTML file to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to terminate the scanning process.
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