CVE-2025-9957

Incorrect Authorization in GitLab

CVSS 2.7 LOWEPSS 0.4%CWE-863

Vexday Risk Score

28Low

SSVC decision (CISA)

Attend

PoC available → attend closely

CVSS 2.7EPSS 0.4%KEV nãoPoC públicaNuclei —Metasploit —Patch —

Lifecycle

22 Apr 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 11.2 before 18.9.6, 18.10 before 18.10.4, and 18.11 before 18.11.1 that under certain conditions could have allowed an authenticated user with project owner permissions to bypass group fork prevention settings due to improper authorization checks.

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

Affected products

GitLab · GitLab

public PoCs found — 1

cve_referencehackerone.com/reports/3275222unverified

⚠ 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/2026/04/22/patch-release-gitlab-18-11-1-released/https://gitlab.com/gitlab-org/gitlab/-/work_items/567781 https://hackerone.com/reports/3275222