CVE-2026-2845: 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: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-02-25 · updated 2026-06-17
Weakness: CWE-770

Description

An issue has been discovered in GitLab CE/EE affecting all versions from 11.2 before 18.7.5, 18.8 before 18.8.5, and 18.9 before 18.9.1 that could have allowed an authenticated user to cause denial of service by exploiting a Bitbucket Server import endpoint via repeatedly sending large responses.

Affected products

GitLab: from 11.2.0 before 18.7.5; from 18.8.0 before 18.8.5; 18.9.0 — fixed in 18.7.5, 18.8.5

How to fix

Upgrade to a fixed version: GitLab 18.7.5, 18.8.5. Check the vendor advisory for mitigations.

References

https://about.gitlab.com/releases/2026/02/25/patch-release-gitlab-18-9-1-released/
https://gitlab.com/gitlab-org/gitlab/-/work_items/570554

Get alerted when CVE-2026-2845 or the next vulnerability affects your stack