CVE-2026-5296

Missing Authorization in GitLab

CVSS 4.3 MEDIUMEPSS 0.2%CWE-862

Vexday Risk Score

33Attention

SSVC decision (CISA)

Attend

PoC available → attend closely

CVSS 4.3EPSS 0.2%KEV nãoPoC públicaNuclei —Metasploit —Patch —

Lifecycle

27 May 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 18.7 before 18.10.7, 18.11 before 18.11.4, and 19.0 before 19.0.1 that when foundational flows were enabled at the group level, could have allowed an authenticated user with developer-role permissions to bypass flow restrictions under certain conditions.

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

Affected products

GitLab · GitLab

public PoCs found — 1

cve_referencehackerone.com/reports/3626303unverified

⚠ 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/2026/05/27/patch-release-gitlab-19-0-1-released/https://gitlab.com/gitlab-org/gitlab/-/work_items/595423 https://hackerone.com/reports/3626303