Context

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 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.

https://github.com/langchain-ai/langchain-mongodb/security/dependabot/101

Definition of done

Update pytest version, which is what brings this in. If this alone doesn't work:
uv lock --upgrade-package pygments

Include in next release. It's not urgent.

Pitfalls

What should the implementer watch out for? What are the risks?

It may reappear and dependabot will flag it again.