Vulnerability in GitLab
CVE-2021-4191
An issue has been discovered in GitLab CE/EE affecting versions 13.0 to 14.6.5, 14.7 to 14.7.4, and 14.8 to 14.8.2. Private GitLab instances with restricted sign-ups may be vulnerable to user enumeration to unauthenticated users through the GraphQL API.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.800 (99.6th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 100th percentile — 99.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.800 · newest: 0.800 · change: 0.000
Affected products
- GitLab — versions >=14.8, <14.8.2, >=14.7, <14.7.4, >=13.0, <14.6.5
Public proof-of-concept exploits
References
- gitlab.com/gitlab-org/gitlab/-/issues/343898 (Broken Link)
- hackerone.com/reports/1089609 (Permissions Required, Third Party Advisory)
- gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-4191.json (Vendor Advisory)
Frequently asked questions
- What is CVE-2021-4191?
- CVE-2021-4191 is a medium-severity vulnerability in GitLab. CVSS score: 5.3/10. Published 2022-03-28.
- How severe is CVE-2021-4191?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2021-4191 known to be exploited?
- 14 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.