CVE-2026-20031 — ClamAV CSS Image Parsing Error Handling Denial of Service Vulnerability
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 affe…
Published: 2026-03-04 · CVSS: 5.3 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7