Auth bypass in GitLab
CVE-2021-39945
Improper access control in the GitLab CE/EE API affecting all versions starting from 9.4 before 14.3.6, all versions starting from 14.4 before 14.4.4, all versions starting from 14.5 before 14.5.2, allows an author of a Merge Request to approve the Merge Request even after having their project access revoked
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 2.7 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.009 (58.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 58th percentile — 58.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000
Affected products
- GitLab — versions >=14.5, <14.5.2, >=14.4, <14.4.4, >=9.4, <14.3.6
Weakness classification (CWE)
References
- gitlab.com/gitlab-org/gitlab/-/issues/331675 (Broken Link)
- hackerone.com/reports/1198317 (Permissions Required, Third Party Advisory)
- gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39945.json (Third Party Advisory)
Frequently asked questions
- What is CVE-2021-39945?
- CVE-2021-39945 is a low-severity vulnerability in GitLab, classified under Incorrect Authorization. CVSS score: 2.7/10. Published 2021-12-13.
- How severe is CVE-2021-39945?
- Low severity. CVSS v3 base score is 2.7 out of 10.