CVE-2026-20348
ClamAV XAR File Format Processing Memory Corruption Vulnerability
CVE-2026-20348 is fixed in 39 products on 1 platform, first by clamav 1.5.4+dfsg-0ubuntu0.22.04.1, released August 7, 2026. It is not reported as exploited. Patch Radar priority: High.
High
CVSS
7.5
Important
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0072
54th percentile
improper size handling in the XAR parser allows excessive allocation and scan-limit bypass
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| clamav · Debian 12.15 (bookworm) | 1.4.6+dfsg-0+deb12u1 | DEBIAN-CVE-2026-20348 | Aug 29, 2026 |
| clamav · Debian 14 | 1.4.6+dfsg-1 | DEBIAN-CVE-2026-20348 | Aug 29, 2026 |
| clamav · Ubuntu 22.04.1 LTS (jammy) | 1.5.4+dfsg-0ubuntu0.22.04.1 | clamav 1.5.4+dfsg-0ubuntu0.22.04.1 | Aug 7, 2026 |
| clamav · Ubuntu 24.04.5 LTS (noble) | 1.5.4+dfsg-0ubuntu0.24.04.1 | clamav 1.5.4+dfsg-0ubuntu0.24.04.1 | Aug 7, 2026 |
| clamav · Ubuntu 26.04.1 LTS (resolute) | 1.5.4+dfsg-0ubuntu0.26.04.1 | clamav 1.5.4+dfsg-0ubuntu0.26.04.1 | Aug 7, 2026 |
| clamav · opensuse-leap 16.0 | 1.5.4-160000.1.1 | OPENSUSE-SU-2026:21831-1 | Sep 11, 2026 |
| clamav · sles 15.6 | 1.5.4-150600.18.31.1 | SUSE-SU-2026:4180-1 | Sep 14, 2026 |
| clamav · sles 15.7 | 1.5.4-150600.18.31.1 | SUSE-SU-2026:4180-1 | Sep 14, 2026 |
| clamav · sles 16.0 | 1.5.4-160000.1.1 | SUSE-SU-2026:23727-1 | Sep 11, 2026 |
| clamav-base · Ubuntu 22.04.1 LTS (jammy) | 1.5.4+dfsg-0ubuntu0.22.04.1 | clamav-base 1.5.4+dfsg-0ubuntu0.22.04.1 | Aug 7, 2026 |
| clamav-base · Ubuntu 24.04.5 LTS (noble) | 1.5.4+dfsg-0ubuntu0.24.04.1 | clamav-base 1.5.4+dfsg-0ubuntu0.24.04.1 | Aug 7, 2026 |
| clamav-base · Ubuntu 26.04.1 LTS (resolute) | 1.5.4+dfsg-0ubuntu0.26.04.1 | clamav-base 1.5.4+dfsg-0ubuntu0.26.04.1 | Aug 7, 2026 |
| clamav-daemon · Ubuntu 22.04.1 LTS (jammy) | 1.5.4+dfsg-0ubuntu0.22.04.1 | clamav-daemon 1.5.4+dfsg-0ubuntu0.22.04.1 | Aug 7, 2026 |
| clamav-daemon · Ubuntu 24.04.5 LTS (noble) | 1.5.4+dfsg-0ubuntu0.24.04.1 | clamav-daemon 1.5.4+dfsg-0ubuntu0.24.04.1 | Aug 7, 2026 |
| clamav-daemon · Ubuntu 26.04.1 LTS (resolute) | 1.5.4+dfsg-0ubuntu0.26.04.1 | clamav-daemon 1.5.4+dfsg-0ubuntu0.26.04.1 | Aug 7, 2026 |
| clamav-docs · Ubuntu 22.04.1 LTS (jammy) | 1.5.4+dfsg-0ubuntu0.22.04.1 | clamav-docs 1.5.4+dfsg-0ubuntu0.22.04.1 | Aug 7, 2026 |
| clamav-docs · Ubuntu 24.04.5 LTS (noble) | 1.5.4+dfsg-0ubuntu0.24.04.1 | clamav-docs 1.5.4+dfsg-0ubuntu0.24.04.1 | Aug 7, 2026 |
| clamav-docs · Ubuntu 26.04.1 LTS (resolute) | 1.5.4+dfsg-0ubuntu0.26.04.1 | clamav-docs 1.5.4+dfsg-0ubuntu0.26.04.1 | Aug 7, 2026 |
| clamav-freshclam · Ubuntu 22.04.1 LTS (jammy) | 1.5.4+dfsg-0ubuntu0.22.04.1 | clamav-freshclam 1.5.4+dfsg-0ubuntu0.22.04.1 | Aug 7, 2026 |
| clamav-freshclam · Ubuntu 24.04.5 LTS (noble) | 1.5.4+dfsg-0ubuntu0.24.04.1 | clamav-freshclam 1.5.4+dfsg-0ubuntu0.24.04.1 | Aug 7, 2026 |
| clamav-freshclam · Ubuntu 26.04.1 LTS (resolute) | 1.5.4+dfsg-0ubuntu0.26.04.1 | clamav-freshclam 1.5.4+dfsg-0ubuntu0.26.04.1 | Aug 7, 2026 |
| clamav-milter · Ubuntu 22.04.1 LTS (jammy) | 1.5.4+dfsg-0ubuntu0.22.04.1 | clamav-milter 1.5.4+dfsg-0ubuntu0.22.04.1 | Aug 7, 2026 |
| clamav-milter · Ubuntu 24.04.5 LTS (noble) | 1.5.4+dfsg-0ubuntu0.24.04.1 | clamav-milter 1.5.4+dfsg-0ubuntu0.24.04.1 | Aug 7, 2026 |
| clamav-milter · Ubuntu 26.04.1 LTS (resolute) | 1.5.4+dfsg-0ubuntu0.26.04.1 | clamav-milter 1.5.4+dfsg-0ubuntu0.26.04.1 | Aug 7, 2026 |
| clamav-testfiles · Ubuntu 22.04.1 LTS (jammy) | 1.5.4+dfsg-0ubuntu0.22.04.1 | clamav-testfiles 1.5.4+dfsg-0ubuntu0.22.04.1 | Aug 7, 2026 |
| clamav-testfiles · Ubuntu 24.04.5 LTS (noble) | 1.5.4+dfsg-0ubuntu0.24.04.1 | clamav-testfiles 1.5.4+dfsg-0ubuntu0.24.04.1 | Aug 7, 2026 |
| clamav-testfiles · Ubuntu 26.04.1 LTS (resolute) | 1.5.4+dfsg-0ubuntu0.26.04.1 | clamav-testfiles 1.5.4+dfsg-0ubuntu0.26.04.1 | Aug 7, 2026 |
| clamav1.4 · amzn 2023 | 1.4.6-1.amzn2023.0.1 | ALAS2023-2026-2084 | Aug 31, 2026 |
| clamav1.4-data · amzn 2023 | 1.4.6-1.amzn2023.0.1 | ALAS2023-2026-2084 | Aug 31, 2026 |
| clamav1.4-debuginfo · amzn 2023 | 1.4.6-1.amzn2023.0.1 | ALAS2023-2026-2084 | Aug 31, 2026 |
| clamav1.4-debugsource · amzn 2023 | 1.4.6-1.amzn2023.0.1 | ALAS2023-2026-2084 | Aug 31, 2026 |
| clamav1.4-devel · amzn 2023 | 1.4.6-1.amzn2023.0.1 | ALAS2023-2026-2084 | Aug 31, 2026 |
| clamav1.4-doc · amzn 2023 | 1.4.6-1.amzn2023.0.1 | ALAS2023-2026-2084 | Aug 31, 2026 |
| clamav1.4-filesystem · amzn 2023 | 1.4.6-1.amzn2023.0.1 | ALAS2023-2026-2084 | Aug 31, 2026 |
| clamav1.4-freshclam · amzn 2023 | 1.4.6-1.amzn2023.0.1 | ALAS2023-2026-2084 | Aug 31, 2026 |
| clamav1.4-freshclam-debuginfo · amzn 2023 | 1.4.6-1.amzn2023.0.1 | ALAS2023-2026-2084 | Aug 31, 2026 |
| clamav1.4-lib · amzn 2023 | 1.4.6-1.amzn2023.0.1 | ALAS2023-2026-2084 | Aug 31, 2026 |
| clamav1.4-lib-debuginfo · amzn 2023 | 1.4.6-1.amzn2023.0.1 | ALAS2023-2026-2084 | Aug 31, 2026 |
| clamav1.4-milter · amzn 2023 | 1.4.6-1.amzn2023.0.1 | ALAS2023-2026-2084 | Aug 31, 2026 |
| clamav1.4-milter-debuginfo · amzn 2023 | 1.4.6-1.amzn2023.0.1 | ALAS2023-2026-2084 | Aug 31, 2026 |
| clamav1.5 · amzn 2023 | 1.5.4-1.amzn2023.0.1 | ALAS2023-2026-2116 | Aug 31, 2026 |
| clamav1.5-data · amzn 2023 | 1.5.4-1.amzn2023.0.1 | ALAS2023-2026-2116 | Aug 31, 2026 |
| clamav1.5-debuginfo · amzn 2023 | 1.5.4-1.amzn2023.0.1 | ALAS2023-2026-2116 | Aug 31, 2026 |
| clamav1.5-debugsource · amzn 2023 | 1.5.4-1.amzn2023.0.1 | ALAS2023-2026-2116 | Aug 31, 2026 |
| clamav1.5-devel · amzn 2023 | 1.5.4-1.amzn2023.0.1 | ALAS2023-2026-2116 | Aug 31, 2026 |
| clamav1.5-doc · amzn 2023 | 1.5.4-1.amzn2023.0.1 | ALAS2023-2026-2116 | Aug 31, 2026 |
| clamav1.5-filesystem · amzn 2023 | 1.5.4-1.amzn2023.0.1 | ALAS2023-2026-2116 | Aug 31, 2026 |
| clamav1.5-freshclam · amzn 2023 | 1.5.4-1.amzn2023.0.1 | ALAS2023-2026-2116 | Aug 31, 2026 |
| clamav1.5-freshclam-debuginfo · amzn 2023 | 1.5.4-1.amzn2023.0.1 | ALAS2023-2026-2116 | Aug 31, 2026 |
| clamav1.5-lib · amzn 2023 | 1.5.4-1.amzn2023.0.1 | ALAS2023-2026-2116 | Aug 31, 2026 |
| clamav1.5-lib-debuginfo · amzn 2023 | 1.5.4-1.amzn2023.0.1 | ALAS2023-2026-2116 | Aug 31, 2026 |
| clamav1.5-milter · amzn 2023 | 1.5.4-1.amzn2023.0.1 | ALAS2023-2026-2116 | Aug 31, 2026 |
| clamav1.5-milter-debuginfo · amzn 2023 | 1.5.4-1.amzn2023.0.1 | ALAS2023-2026-2116 | Aug 31, 2026 |
| clamd1.4 · amzn 2023 | 1.4.6-1.amzn2023.0.1 | ALAS2023-2026-2084 | Aug 31, 2026 |
| clamd1.4-debuginfo · amzn 2023 | 1.4.6-1.amzn2023.0.1 | ALAS2023-2026-2084 | Aug 31, 2026 |
| clamd1.5 · amzn 2023 | 1.5.4-1.amzn2023.0.1 | ALAS2023-2026-2116 | Aug 31, 2026 |
| clamd1.5-debuginfo · amzn 2023 | 1.5.4-1.amzn2023.0.1 | ALAS2023-2026-2116 | Aug 31, 2026 |
| clamdscan · Ubuntu 22.04.1 LTS (jammy) | 1.5.4+dfsg-0ubuntu0.22.04.1 | clamdscan 1.5.4+dfsg-0ubuntu0.22.04.1 | Aug 7, 2026 |
| clamdscan · Ubuntu 24.04.5 LTS (noble) | 1.5.4+dfsg-0ubuntu0.24.04.1 | clamdscan 1.5.4+dfsg-0ubuntu0.24.04.1 | Aug 7, 2026 |
| clamdscan · Ubuntu 26.04.1 LTS (resolute) | 1.5.4+dfsg-0ubuntu0.26.04.1 | clamdscan 1.5.4+dfsg-0ubuntu0.26.04.1 | Aug 7, 2026 |
| libclamav12 · Ubuntu 22.04.1 LTS (jammy) | 1.5.4+dfsg-0ubuntu0.22.04.1 | libclamav12 1.5.4+dfsg-0ubuntu0.22.04.1 | Aug 7, 2026 |
| libclamav12 · Ubuntu 24.04.5 LTS (noble) | 1.5.4+dfsg-0ubuntu0.24.04.1 | libclamav12 1.5.4+dfsg-0ubuntu0.24.04.1 | Aug 7, 2026 |
| libclamav12 · Ubuntu 26.04.1 LTS (resolute) | 1.5.4+dfsg-0ubuntu0.26.04.1 | libclamav12 1.5.4+dfsg-0ubuntu0.26.04.1 | Aug 7, 2026 |
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