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...
- Published
- Mar 28, 2022
- Updated
- Aug 3, 2024
- Assigning CNA
- GitLab
- Evidence observed
- Aug 8, 2026
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:NHigh · next 30 days
- Percentile
- 99.6%
- Model date
- Oct 13, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
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.
Sources
modules/auxiliary/scanner/http/gitlab_graphql_user_enum.rb
Metasploit Framework modulesDeclared conditions
- verification: check_not_declared($.auxiliary_scanner/http/gitlab_graphql_user_enum.check)
http/cves/2021/CVE-2021-4191.yaml
Nuclei TemplatesDeclared conditions
- network: http($.protocol_keys)
- verification: status,word($.matchers[*].type)
Responsible use
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