Upstream information

CVE-2026-20031 at MITRE

Description

A vulnerability in the HTML Cascading Style Sheets (CSS) module of ClamAV could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.

This vulnerability is due to improper error handling when splitting UTF-8 strings. An attacker could exploit this vulnerability by submitting a crafted HTML file to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to terminate the scanning process.

SUSE information

Overall state of this security issue: Pending

This issue is currently rated as having moderate severity.

CVSS v3 Scores
CVSS detail CNA (Cisco Systems Inc) SUSE
Base Score 5.3 5.3
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack Vector Network Network
Attack Complexity Low Low
Privileges Required None None
User Interaction None None
Scope Unchanged Unchanged
Confidentiality Impact None None
Integrity Impact None None
Availability Impact Low Low
CVSSv3 Version 3.1 3.1
CVSS v4 Scores
CVSS detail SUSE
Base Score 6.9
Vector 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
Attack Vector Network
Attack Complexity Low
Attack Requirements None
Privileges Required None
User Interaction None
Vulnerable System Confidentiality Impact None
Vulnerable System Integrity Impact None
Vulnerable System Availability Impact Low
Subsequent System Confidentiality Impact None
Subsequent System Integrity Impact None
Subsequent System Availability Impact None
CVSSv4 Version 4.0
SUSE Bugzilla entry: 1259207 [NEW]

No SUSE Security Announcements cross referenced.


Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.

Product(s) Source package State
Products under general support and receiving all security fixes.
SUSE Linux Enterprise Desktop 15 SP7 clamav Affected
SUSE Linux Enterprise High Performance Computing 15 SP7 clamav Affected
SUSE Linux Enterprise Micro 5.5 clamav Affected
SUSE Linux Enterprise Module for Basesystem 15 SP7 clamav Affected
SUSE Linux Enterprise Server 15 SP7 clamav Affected
SUSE Linux Enterprise Server 16.0 clamav Affected
SUSE Linux Enterprise Server 16.1 clamav Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP7 clamav Affected
SUSE Linux Enterprise Server for SAP applications 16.0 clamav Affected
SUSE Linux Enterprise Server for SAP applications 16.1 clamav Affected
openSUSE Leap 15.6 clamav Affected
Products under Long Term Service Pack support and receiving important and critical security fixes.
SUSE Linux Enterprise High Performance Computing 15 SP4 clamav Not affected
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS clamav Affected
SUSE Linux Enterprise High Performance Computing 15 SP5 clamav Not affected
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS clamav Affected
SUSE Linux Enterprise Module for Basesystem 15 SP4 clamav Not affected
SUSE Linux Enterprise Module for Basesystem 15 SP5 clamav Not affected
SUSE Linux Enterprise Module for Basesystem 15 SP6 clamav Affected
SUSE Linux Enterprise Server 12 SP5 clamav Affected
SUSE Linux Enterprise Server 12 SP5-LTSS clamav Affected
SUSE Linux Enterprise Server 12 SP5-LTSS Extended Security clamav Affected
SUSE Linux Enterprise Server 15 SP4 clamav Not affected
SUSE Linux Enterprise Server 15 SP4-LTSS clamav Affected
SUSE Linux Enterprise Server 15 SP5 clamav Not affected
SUSE Linux Enterprise Server 15 SP5-LTSS clamav Affected
SUSE Linux Enterprise Server 15 SP6-LTSS clamav Affected
SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 clamav Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP6 clamav Affected
SUSE Manager Proxy 4.3 clamav Affected
SUSE Manager Proxy LTS 4.3 clamav Affected
SUSE Manager Retail Branch Server 4.3 clamav Affected
SUSE Manager Retail Branch Server LTS 4.3 clamav Affected
SUSE Manager Server 4.3 clamav Affected
SUSE Manager Server LTS 4.3 clamav Affected
Products past their end of life and not receiving proactive updates anymore.
HPE Helion OpenStack 8 clamav Not affected
SUSE CaaS Platform 4.0 clamav Not affected
SUSE Enterprise Storage 6 clamav Not affected
SUSE Enterprise Storage 7 clamav Not affected
SUSE Enterprise Storage 7.1 clamav Affected
SUSE Linux Enterprise Desktop 12 clamav Not affected
SUSE Linux Enterprise Desktop 12 SP1 clamav Not affected
SUSE Linux Enterprise Desktop 12 SP2 clamav Not affected
SUSE Linux Enterprise Desktop 12 SP3 clamav Not affected
SUSE Linux Enterprise Desktop 12 SP4 clamav Not affected
SUSE Linux Enterprise Desktop 15 clamav Not affected
SUSE Linux Enterprise Desktop 15 SP1 clamav Not affected
SUSE Linux Enterprise Desktop 15 SP2 clamav Not affected
SUSE Linux Enterprise Desktop 15 SP3 clamav Not affected
SUSE Linux Enterprise Desktop 15 SP4 clamav Not affected
SUSE Linux Enterprise Desktop 15 SP5 clamav Not affected
SUSE Linux Enterprise Desktop 15 SP6 clamav Affected
SUSE Linux Enterprise High Performance Computing 15 clamav Not affected
SUSE Linux Enterprise High Performance Computing 15 SP1 clamav Not affected
SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS clamav Not affected
SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS clamav Not affected
SUSE Linux Enterprise High Performance Computing 15 SP2 clamav Not affected
SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS clamav Not affected
SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS clamav Not affected
SUSE Linux Enterprise High Performance Computing 15 SP3 clamav Not affected
SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS clamav Not affected
SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS clamav Affected
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS clamav Affected
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS clamav Affected
SUSE Linux Enterprise High Performance Computing 15 SP6 clamav Affected
SUSE Linux Enterprise High Performance Computing 15-ESPOS clamav Not affected
SUSE Linux Enterprise High Performance Computing 15-LTSS clamav Not affected
SUSE Linux Enterprise Module for Basesystem 15 clamav Not affected
SUSE Linux Enterprise Module for Basesystem 15 SP1 clamav Not affected
SUSE Linux Enterprise Module for Basesystem 15 SP2 clamav Not affected
SUSE Linux Enterprise Module for Basesystem 15 SP3 clamav Not affected
SUSE Linux Enterprise Point of Sale 12 SP2-CLIENT clamav Not affected
SUSE Linux Enterprise Real Time 15 SP2 clamav Not affected
SUSE Linux Enterprise Real Time 15 SP3 clamav Not affected
SUSE Linux Enterprise Real Time 15 SP4 clamav Not affected
SUSE Linux Enterprise Server 12 clamav Not affected
SUSE Linux Enterprise Server 12 SP1 clamav Not affected
SUSE Linux Enterprise Server 12 SP1-LTSS clamav Not affected
SUSE Linux Enterprise Server 12 SP2 clamav Not affected
SUSE Linux Enterprise Server 12 SP2-BCL clamav Not affected
SUSE Linux Enterprise Server 12 SP2-ESPOS clamav Not affected
SUSE Linux Enterprise Server 12 SP2-LTSS clamav Not affected
SUSE Linux Enterprise Server 12 SP3 clamav Not affected
SUSE Linux Enterprise Server 12 SP3-BCL clamav Not affected
SUSE Linux Enterprise Server 12 SP3-ESPOS clamav Not affected
SUSE Linux Enterprise Server 12 SP3-LTSS clamav Not affected
SUSE Linux Enterprise Server 12 SP4 clamav Not affected
SUSE Linux Enterprise Server 12 SP4-ESPOS clamav Not affected
SUSE Linux Enterprise Server 12 SP4-LTSS clamav Not affected
SUSE Linux Enterprise Server 12-LTSS clamav Not affected
SUSE Linux Enterprise Server 15 clamav Not affected
SUSE Linux Enterprise Server 15 SP1 clamav Not affected
SUSE Linux Enterprise Server 15 SP1-BCL clamav Not affected
SUSE Linux Enterprise Server 15 SP1-LTSS clamav Not affected
SUSE Linux Enterprise Server 15 SP2 clamav Not affected
SUSE Linux Enterprise Server 15 SP2-BCL clamav Not affected
SUSE Linux Enterprise Server 15 SP2-LTSS clamav Not affected
SUSE Linux Enterprise Server 15 SP3 clamav Not affected
SUSE Linux Enterprise Server 15 SP3-BCL clamav Not affected
SUSE Linux Enterprise Server 15 SP3-LTSS clamav Affected
SUSE Linux Enterprise Server 15 SP6 clamav Affected
SUSE Linux Enterprise Server 15-LTSS clamav Not affected
SUSE Linux Enterprise Server for Raspberry Pi 12 SP2 clamav Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP1 clamav Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP2 clamav Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP3 clamav Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP4 clamav Not affected
SUSE Linux Enterprise Server for SAP Applications 15 clamav Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP1 clamav Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP2 clamav Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP3 clamav Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP4 clamav Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP5 clamav Affected
SUSE Manager Proxy 4.0 clamav Not affected
SUSE Manager Proxy 4.1 clamav Not affected
SUSE Manager Proxy 4.2 clamav Not affected
SUSE Manager Retail Branch Server 4.0 clamav Not affected
SUSE Manager Retail Branch Server 4.1 clamav Not affected
SUSE Manager Retail Branch Server 4.2 clamav Not affected
SUSE Manager Server 4.0 clamav Not affected
SUSE Manager Server 4.1 clamav Not affected
SUSE Manager Server 4.2 clamav Not affected
SUSE OpenStack Cloud 7 clamav Not affected
SUSE OpenStack Cloud 8 clamav Not affected
SUSE OpenStack Cloud 9 clamav Not affected
SUSE OpenStack Cloud Crowbar 8 clamav Not affected
SUSE OpenStack Cloud Crowbar 9 clamav Not affected
openSUSE Leap 15.3 clamav Not affected
openSUSE Leap 15.4 clamav Not affected
openSUSE Leap 15.5 clamav Not affected


SUSE Timeline for this CVE

CVE page created: Wed Mar 4 20:03:19 2026
CVE page last modified: Thu Mar 5 13:00:27 2026