Auth bypass in GitLab
CVE-2021-39934
Improper access control allows any project member to retrieve the service desk email address in GitLab CE/EE versions starting 12.10 before 14.3.6, all versions starting from 14.4 before 14.4.4, all versions starting from 14.5 before 14.5.2.
Vulnerability class: IDOR (Insecure Direct Object Reference)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.009 (58.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 58th percentile — 58.5% 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 >=12.10, <14.3.6, >=14.4, <14.4.4, >=14.5, <14.5.2
Weakness classification (CWE)
References
- gitlab.com/gitlab-org/gitlab/-/issues/342823 (Broken Link)
- hackerone.com/reports/1360744 (Permissions Required, Third Party Advisory)
- gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39934.json (Third Party Advisory)
Frequently asked questions
- What is CVE-2021-39934?
- CVE-2021-39934 is a medium-severity vulnerability in GitLab, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 4.3/10. Published 2021-12-13.
- How severe is CVE-2021-39934?
- Medium severity. CVSS v3 base score is 4.3 out of 10.