Fedora 44 ClamAV Denial of Service Issues Addressed 2026

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Clam AntiVirus is an anti-virus toolkit for UNIX. The main purpose of this

software is the integration with mail servers (attachment scanning). The

package provides a flexible and scalable multi-threaded daemon, a command

line scanner, and a tool for automatic updating via Internet. The programs

are based on a shared library distributed with the Clam AntiVirus package,

which you can use with your own software. The virus database is based on

the virus database from OpenAntiVirus, but contains additional signatures

(including signatures for popular polymorphic viruses, too) and is KEPT UP

* Mon Aug 10 2026 Gwyn Ciesla - 1.4.6-1 - Update to 1.4.6 * Wed Jul 15 2026 Fedora Release Engineering - 1.4.5-3 - Rebuilt for * Fri Jul 10 2026 Jerry James - 1.4.5-2 - Remove unused ocaml BuildRequires

* Mon Aug 10 2026 Gwyn Ciesla - 1.4.6-1 - Update to 1.4.6 * Wed Jul 15 2026 Fedora Release Engineering - 1.4.5-3 - Rebuilt for * Fri Jul 10 2026 Jerry James - 1.4.5-2 - Remove unused ocaml BuildRequires

[ 1 ] Bug #2444609 - CVE-2026-20031 clamav: improper error handling when splitting UTF-8 strings in the HTML Cascading Style Sheets (CSS) module [epel-all] [ 2 ] Bug #2444610 - CVE-2026-20031 clamav: improper error handling when splitting UTF-8 strings in the HTML Cascading Style Sheets (CSS) module [fedora-all] [ 3 ] Bug #2496742 - CVE-2026-20216 clamav: ClamAV: Denial of Service via crafted InstallShield file [epel-all] [ 4 ] Bug #2496743 - CVE-2026-20216 clamav: ClamAV: Denial of Service via crafted InstallShield file [fedora-all] [ 5 ] Bug #2496819 - CVE-2026-20215 clamav: ClamAV: Denial of Service via crafted 7z file [epel-all] [ 6 ] Bug #2496820 - CVE-2026-2021...

This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-ecf6fe868f' at the command line. For more information, refer to the dnf documentation available at

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