OESA-2026-1873 python-pygments security update

\ Security Fixes: 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...

Updated python-pygments packages fix security vulnerability

A security flaw in Pygments function AdlLexer in archetype.py stems from a regular expression having an inefficient, possibly exponential worst-case computational complexity that consumes excessive CPU cycles. CVE-2026-4539...

CVE-2026-4539

A flaw was found in pygments. A local user can exploit this vulnerability by providing specially crafted input to the AdlLexer function, which leads to inefficient regular expression processing. This can result in a Denial of Service DoS, making the application unresponsive...

EUVD-2026-14287

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...

Pygments has Regular Expression Denial of Service (ReDoS) due to Inefficient Regex for GUID Matching

A security flaw has been discovered in pygments before 2.20.0. 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 release...

GHSA-5239-WWWM-4PMQ Pygments has Regular Expression Denial of Service (ReDoS) due to Inefficient Regex for GUID Matching

A security flaw has been discovered in pygments before 2.20.0. 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 release...

CVE-2026-4539

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...

CVE-2026-4539 pygments archetype.py AdlLexer redos

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...

CVE-2026-4539

CVE-2026-4539 affects the Pygments project, specifically the AdlLexer in pygments/lexers/archetype.py up to version 2.19.2. The issue stems from an inefficient regular expression construct in the AdlLexer, enabling a local-access DoS/slowdown scenario. Publicly released exploit material exists, a...

CVE-2026-4539 pygments archetype.py AdlLexer redos

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...

Linux Distros Unpatched Vulnerability : CVE-2026-4539

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - 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...

PT-2026-26970

Name of the Vulnerable Software and Affected Versions pygments versions up to 2.19.2 Description A security flaw exists in pygments. The issue resides within the AdlLexer function located in the pygments/lexers/archetype.py file, leading to inefficient regular expression complexity. This...