CVE-2026-4539

Description

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.

References

https://vuldb.com/?submit.774685

https://vuldb.com/?id.352327

https://vuldb.com/?ctiid.352327

https://github.com/pygments/pygments/issues/3058

https://github.com/pygments/pygments/

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3

CVSS v4

EPSS