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CVE-2025-9484

Missing Authorization in GitLab

CVSS 4.3 MEDIUMEPSS 0.3%CWE-862
GitLab has remediated an issue in GitLab EE affecting all versions from 16.6 before 18.8.9, 18.9 before 18.9.5, and 18.10 before 18.10.3 that under certain circumstances could have allowed an authenticated user to have access to other users' email addresses via certain GraphQL queries.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Affected products
GitLab · GitLab
public PoCs found — 1
cve_referencehackerone.com/reports/3303810unverified
⚠ 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/2026/04/08/patch-release-gitlab-18-10-3-released/https://gitlab.com/gitlab-org/gitlab/-/issues/565363https://hackerone.com/reports/3303810