CVE-2026-6976

Authorization Bypass Through User-Controlled Key in GitLab

CVSS 3.7 LOWEPSS 0.2%CWE-639

Vexday Risk Score

28Low

SSVC decision (CISA)

Attend

PoC available → attend closely

CVSS 3.7EPSS 0.2%KEV nãoPoC públicaNuclei —Metasploit —Patch —

Lifecycle

11 Jun 2026Published on NVD

Recommendation: Plan a near-term fix — a public PoC already exists.

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 15.9 before 18.10.8, 18.11 before 18.11.5, and 19.0 before 19.0.2 that under certain conditions could have allowed an authenticated user with developer-role permissions to hide changes from merge request diff views due to improper input handling of file names.

CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N

Affected products

GitLab · GitLab

public PoCs found — 1

cve_referencehackerone.com/reports/3638136unverified

⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

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References

https://about.gitlab.com/releases/2026/06/10/patch-release-gitlab-19-0-2-released/https://gitlab.com/gitlab-org/gitlab/-/work_items/598165 https://hackerone.com/reports/3638136