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Posted on Originally published at beyondmachines.net

GitLab Patches Critical Regex Flaws Allowing Remote Code Execution

Summary

GitLab released emergency patches for 11 vulnerabilities, including two critical regex-related flaws (CVE-2026-89078 and CVE-2026-93577) that allow authenticated attackers to execute arbitrary code on self-managed servers.

Take Action:

If you run your own GitLab server, update it to version 19.4.1, 19.3.3, or 19.2.7. Two critical flaws allow any logged-in user take over the whole server. After updating, check your .gitlab-ci.yml files for new or strange-looking regular expressions, and review who has access to your projects in case someone already tried to exploit this. GitLab.com and GitLab Dedicated users don't need to do anything.


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This article was originally published on BeyondMachines

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