CVE-2021-4191 json
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.
published 2022-03-28 4 y ago modified 2026-09-08 2 mo ago also BIT-gitlab-2021-4191 , EUVD-2021-34051
- cvss
- 5.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 80.0%
- EPSS 80.0% chance of exploitation in 30 days, percentile 99.6%
- public exploits
- 1
- Metasploit, plus a Nuclei check
Summary
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.
Patch / fix
- bitnami gitlab 14.6.5, 14.7.4, 14.8.2
- gitlab gitlab 14.6.5, 14.7.4, 14.8.2
- gitlab gitlab_enterprise 14.6.5, 14.7.4, 14.8.2
Timeline
- First public exploit (Metasploit auxiliary/scanner/http/gitlab_graphql_user_enum)
- Published
Exploit prediction
80.00% chance of exploitation in the next 30 days, higher than 99.6% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- Metasploit auxiliary/scanner/http/gitlab_graphql_user_enum GitLab GraphQL API User Enumeration metasploit auxiliary, normal rank, 2022-02-25
- Nuclei template GitLab GraphQL API User Enumeration nuclei detection template
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| NVD | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:P/I:N/A:N |
| OSV | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| bitnami | gitlab | >=13.0.0, <14.6.5 >=14.7.0, <14.7.4 >=14.8.0, <14.8.2 |
14.6.5 14.7.4 14.8.2 |
Affected products
- GitLab GitLab
Classification
- Technology feeds
References
-
gitlab.com
/gitlab-org/cves/-/blob/master/2021/CVE-2021-4191.json
vendor-advisory, advisory
-
gitlab.com
/gitlab-org/gitlab/-/issues/343898
broken-link, web
-
hackerone.com
/reports/1089609
permissions-required, third-party-advisory, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2021-4191
web
Sources
- CVE List CVE-2021-4191
- NVD CVE-2021-4191
- OSV BIT-gitlab-2021-4191
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Enhance with deb and rpm package type records.