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.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade clamav | Aug 13, 2026 | Aug 7, 2026 |
| Amazon_linux_2023 | — | Upgrade clamav1.4-filesystemUpgrade clamav1.4-milter-debuginfoUpgrade clamav1.4-docUpgrade clamav1.5-freshclam-debuginfoUpgrade clamav1.5-libUpgrade clamav1.4Upgrade clamav1.4-freshclam-debuginfoUpgrade clamav1.5-lib-debuginfoUpgrade clamd1.5Upgrade clamav1.4-lib-debuginfoUpgrade clamav1.5-filesystemUpgrade clamav1.4-milterUpgrade clamav1.5-develUpgrade clamd1.4-debuginfoUpgrade clamav1.4-debuginfoUpgrade clamav1.4-libUpgrade clamav1.4-freshclamUpgrade clamd1.4Upgrade clamav1.5-debugsourceUpgrade clamav1.5-freshclamUpgrade clamav1.5-debuginfoUpgrade clamd1.5-debuginfoUpgrade clamav1.5-milter-debuginfoUpgrade clamav1.5-milterUpgrade clamav1.4-dataUpgrade clamav1.5Upgrade clamav1.4-debugsourceUpgrade clamav1.5-dataUpgrade clamav1.5-docUpgrade clamav1.4-devel | Sep 1, 2026 | Aug 7, 2026 |
| Ubuntu | — | Upgrade clamav | Sep 21, 2026 | Aug 7, 2026 |
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