CVE-2026-5309

Authorization Bypass Through User-Controlled Key in GitLab

CVSS 5.4 MEDIUMEPSS 0.2%CWE-639

Vexday Risk Score

33Attention

SSVC decision (CISA)

Attend

PoC available → attend closely

CVSS 5.4EPSS 0.2%KEV nãoPoC públicaNuclei —Metasploit —Patch —

Lifecycle

25 Jun 2026Published on NVD

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

GitLab has remediated an issue in GitLab EE affecting all versions from 18.6 before 18.11.6, 19.0 before 19.0.3, and 19.1 before 19.1.1 that under certain conditions could have allowed an authenticated user to read or modify another group's virtual registry cleanup policy settings without authorization.

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

Affected products

GitLab · GitLab

public PoCs found — 1

cve_referencehackerone.com/reports/3628793unverified

⚠ 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://docs.gitlab.com/releases/patches/patch-release-gitlab-19-1-1-released/https://gitlab.com/gitlab-org/gitlab/-/work_items/595468 https://hackerone.com/reports/3628793