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Affected Component
Analysis
clamav
Patched
Name
CVE-2026-20348
Description
A vulnerability in the XAR file format parser of ClamAV could allow an unauthenticated, remote attacker to cause a DoS condition or possibly other expanded impacts as a result of memory corruption on an affected device.
This vulnerability is due to improper boundary checks for content in XAR files during scanning. An attacker could exploit this vulnerability by submitting a crafted file that contains XAR content to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to cause the ClamAV scanning process to terminate, resulting in a DoS condition on the affected software.
CWEs
Published Date
Updated Date
Workaround
-
Analysis#
Vulnerability Ratings#
7.5
CVSSv31
NaN
other
Others affected components#
Resolved with patches#
clamav (buildroot:2025.02.x)
#
Title
Author
Resolve
1
libclamav: Enforce XAR limits against inflated TOC size
John Humlick <15677335+jhumlick@users.noreply.github.com>
CVE-2026-20348