CVE-2026-77801: Allocation of Resources Without Limits or Throttling in GitLab

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-26 · updated 2026-08-31
Weakness: CWE-770

Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 12.8 before 19.1.7, 19.2 before 19.2.5, and 19.3 before 19.3.1 that, under certain conditions, could have allowed an authenticated user to cause a denial of service affecting background job processing, due to missing object count limits.

Affected products

GitLab: from 12.8.0 before 19.1.7; from 19.2.0 before 19.2.5; 19.3.0 — fixed in 19.1.7, 19.2.5

How to fix

Upgrade to a fixed version: GitLab 19.1.7, 19.2.5. Check the vendor advisory for mitigations.

References

https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-3-1-released/
https://gitlab.com/gitlab-org/gitlab/-/work_items/597273

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