RCE in GitLab
CVE-2021-39908
In all versions of GitLab CE/EE starting from 0.8.0 before 14.2.6, all versions starting from 14.3 before 14.3.4, and all versions starting from 14.4 before 14.4.1 certain Unicode characters can be abused to commit malicious code into projects without being noticed in merge request or source code viewer UI.
Vulnerability class: RCE (Remote Code Execution)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.013 (68.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 69th percentile — 68.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000
Affected products
- GitLab — versions >=0.8.0, <14.2.6, 14.4.0, >=14.3, <14.3.4
Weakness classification (CWE)
References
- gitlab.com/gitlab-org/gitlab/-/issues/337193 (Broken Link)
- hackerone.com/reports/1280077 (Permissions Required, Third Party Advisory)
- gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39908.json (Vendor Advisory)
Frequently asked questions
- What is CVE-2021-39908?
- CVE-2021-39908 is a medium-severity vulnerability in GitLab, classified under Code Injection. CVSS score: 6.5/10. Published 2022-04-01.
- How severe is CVE-2021-39908?
- Medium severity. CVSS v3 base score is 6.5 out of 10.