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Vulnerabilities
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CVE-2026-4539

Updated on 22 Mar 2026

Severity

3.3 Low severity

Details

CVSS score
3.3
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
CWE ID
Links
NISTCIRCLRHELUbuntu

Overview

About vulnerability

A security flaw has been discovered in pygments up to 2.19.2. The impacted element is the function AdlLexer of the file pygments/lexers/archetype.py. The manipulation results in inefficient regular expression complexity. The attack is only possible with local access. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.

Details

Affected product:
AlmaLinux 9.2 ESU , Alpine Linux 3.22 , Debian 12 , Debian 13 , TuxCare 9.6 ESU
Affected packages:
python @ 3.9 (+16 more)
A security flaw has been discovered in pygments up to 2.19.2. The impacted element is the function AdlLexer of the file pygments/lexers/archetype.py. The manipulation results in inefficient regular expression complexity. The attack is only possible with local access. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.

Fixes