XSS in GitLab
CVE-2021-39910
An issue has been discovered in GitLab CE/EE affecting all versions starting from 12.6 before 14.3.6, all versions starting from 14.4 before 14.4.4, all versions starting from 14.5 before 14.5.2. GitLab was vulnerable to HTML Injection through the Swagger UI feature.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 2.6 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.010 (59.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 59.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000
Affected products
- GitLab — versions >=12.6, <14.3.6, >=14.4, <14.4.4, >=14.5, <14.5.2
Weakness classification (CWE)
References
- gitlab.com/gitlab-org/gitlab/-/issues/325901 (Broken Link)
- hackerone.com/reports/1133656 (Permissions Required, Third Party Advisory)
- gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39910.json (Vendor Advisory)
Frequently asked questions
- What is CVE-2021-39910?
- CVE-2021-39910 is a low-severity vulnerability in GitLab, classified under Cross-site Scripting. CVSS score: 2.6/10. Published 2021-12-13.
- How severe is CVE-2021-39910?
- Low severity. CVSS v3 base score is 2.6 out of 10.