Auth bypass in GitLab
CVE-2021-39918
Incorrect Authorization in GitLab EE affecting all versions starting from 11.1 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 a user to add comments to a vulnerability which cannot be accessed.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.1 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.007 (52.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 52.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
- GitLab — versions >=11.1, <14.3.6, >=14.4, <14.4.4, >=14.5, <14.5.2
Weakness classification (CWE)
References
- gitlab.com/gitlab-org/gitlab/-/issues/329916 (Broken Link)
- hackerone.com/reports/1180043 (Permissions Required, Third Party Advisory)
- gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39918.json (Vendor Advisory)
Frequently asked questions
- What is CVE-2021-39918?
- CVE-2021-39918 is a low-severity vulnerability in GitLab, classified under Incorrect Authorization. CVSS score: 3.1/10. Published 2021-12-13.
- How severe is CVE-2021-39918?
- Low severity. CVSS v3 base score is 3.1 out of 10.