CVE-2026-1094: Improper Validation of Unsafe Equivalence in Input in GitLab

Severity: medium (CVSS 4.6 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-02-11 · updated 2026-06-17
Weakness: CWE-1289

Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.8 before 18.8.4 that could have allowed an authenticated developer to hide specially crafted file changes from the WebUI.

Affected products

GitLab: from 18.8.0 before 18.8.4 — fixed in 18.8.4

How to fix

Upgrade to a fixed version: GitLab 18.8.4. Check the vendor advisory for mitigations.

References

https://about.gitlab.com/releases/2026/02/10/patch-release-gitlab-18-8-4-released/
https://gitlab.com/gitlab-org/gitlab/-/issues/586483
https://hackerone.com/reports/3502519

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