XSS in GitLab
CVE-2021-22234
An issue has been discovered in GitLab CE/EE affecting all versions starting from 13.11 before 13.11.7, all versions starting from 13.12 before 13.12.8, and all versions starting from 14.0 before 14.0.4. A specially crafted design image allowed attackers to read arbitrary files on the server.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.6 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.010 (61.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 61st percentile — 61.3% 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 >=14.0, <14.0.4, >=13.12, <13.12.8, >=13.11, <13.11.7
Weakness classification (CWE)
References
- gitlab.com/gitlab-org/gitlab/-/issues/335205 (Issue Tracking, Vendor Advisory)
- hackerone.com/reports/1212067 (Exploit, Third Party Advisory, Issue Tracking)
- gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22234.json (Vendor Advisory)
Frequently asked questions
- What is CVE-2021-22234?
- CVE-2021-22234 is a critical-severity vulnerability in GitLab, classified under Cross-site Scripting. CVSS score: 9.6/10. Published 2021-08-05.
- How severe is CVE-2021-22234?
- Critical severity. CVSS v3 base score is 9.6 out of 10.