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.

Affected

GitLab

CVSS v3.1 NVD

5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CVSS v2.0 NVD

5.0 MEDIUMAV:N/AC:L/Au:N/C:P/I:N/A:N

EPSS

80.00% chance of exploitation in the next 30 days, 100th percentile

Nuclei

medium · CWE-287

Published

2022-03-28

Updated

2024-08-03

Proof-of-concept exploits (1)

• Adelittle/CVE-2021-4191_Exploits0★ · 2023-06-05

Nuclei templates (1)

• projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-4191.yaml

Metasploit modules (1)

• rapid7/metasploit-framework/blob/master/modules/auxiliary/scanner/http/gitlab_graphql_use…

Security advisories

• https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-4191.json
• https://hackerone.com/reports/1089609

References

• CVE Record
• NVD entry

Related

• CVE-2018-6389