Hi,

The following vulnerability was published for pygments.

CVE-2026-4539[0]:
| 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.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2026-4539
https://www.cve.org/CVERecord?id=CVE-2026-4539
[1] https://github.com/pygments/pygments/issues/3058
[2] https://github.com/pygments/pygments/commit/24b8aa76c6cd6d70f39c6dd605cce319c98e2ccc

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore