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SUSE ClamAV Moderate DoS Vulnerability Advisory 2026-0906-2 CVE-2026-20031

suse
Calendar Grey June 26, 2026
Dist Suse Esm H88
Update for clamav addresses denial of service while enhancing feature support with two security fixes.
An update that solves one vulnerability, contains one feature and has two security fixes can now be installed.

Summary

## This update for clamav fixes the following issues: Update to clamav 1.5.2: Security issue: * CVE-2026-20031: improper error handling in the HTML CSS module when splitting UTF-8 strings can lead to denial of service conditions via a crafted HTML file (bsc#1259207). Non security issue: * Support transactional updates (jsc#PED-14819). Changelog: * Fixed a possible infinite loop when scanning some JPEG files by upgrading affected ClamAV dependency, a Rust image library. * The CVD verification process will now ignore certificate files in the CVD certs directory when the user lacks read permissions. * Freshclam: Fix CLD verification bug with PrivateMirror option. * Upgraded the Rust bytes dependency to a newer version to resolve RUSTSEC-2026-0007 advisory.

Topics%20covered

Topics Covered

security advisory moderate denial of service SuSE clamav cve-2026-20031

References

* bsc#1221954

* bsc#1258072

* bsc#1259207

* jsc#PED-14819

Cross-

* CVE-2026-20031

CVSS scores:

* CVE-2026-20031 ( SUSE ): 6.9

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

* CVE-2026-20031 ( SUSE ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

* CVE-2026-20031 ( NVD ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Affected Products:

* SUSE Linux Enterprise High Performance Computing 15 SP4

* SUSE Linux Enterprise High Performance Computing 15 SP5

* SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4

* SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5

* SUSE Linux Enterprise High Performance Computing LTSS 15 SP4

* SUSE Linux Enterprise High Performance Computing LTSS 15 SP5

* SUSE Linux Enterprise Server 15 SP4

Severity
moderate
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:0906-2
Release Date: 2026-06-26T12:32:21Z
Rating: moderate

Topics%20covered

Topics Covered

security advisory moderate denial of service SuSE clamav cve-2026-20031

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