{"id":"CVE-2021-4191","aliases":["BIT-gitlab-2021-4191","EUVD-2021-34051","GHSA-m37q-w59j-4vr4","UBUNTU-CVE-2021-4191"],"status":"published","title":"An issue has been discovered in GitLab CE/EE affecting versions 13.0 to 14.6.5, 14.7 to 14.7.4,...","description":"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.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.80004,"percentile":0.99617,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":true},"cwes":["CWE-287"],"published":"2022-03-28T18:53:12Z","modified":"2026-10-30T10:30:49Z","exploits":[{"source":"metasploit","id":"auxiliary/scanner/http/gitlab_graphql_user_enum","title":"GitLab GraphQL API User Enumeration","type":"auxiliary","date":"2022-02-25","verified":true,"url":"https://www.rapid7.com/db/modules/auxiliary/scanner/http/gitlab_graphql_user_enum"},{"source":"nuclei","id":"CVE-2021-4191","title":"GitLab GraphQL API User Enumeration","type":"detection template","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-4191.yaml"},{"source":"pocgithub","id":"Adelittle/CVE-2021-4191_Exploits","title":"Adelittle/CVE-2021-4191_Exploits","date":"2023-06-05","url":"https://github.com/Adelittle/CVE-2021-4191_Exploits"}],"fixes":[{"ecosystem":"Bitnami","package":"gitlab","fixed_in":["14.6.5","14.7.4","14.8.2"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Bitnami","package":"gitlab","ranges":[{"type":"SEMVER","events":[{"introduced":"13.0.0"},{"fixed":"14.6.5"},{"introduced":"14.7.0"},{"fixed":"14.7.4"},{"introduced":"14.8.0"},{"fixed":"14.8.2"}]}]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"gitlab","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["8.4.3+dfsg-9","8.4.3+dfsg-12","8.5.8+dfsg-5"]}],"products":[{"vendor":"gitlab","product":"gitlab"}],"references":[{"url":"https://gitlab.com/gitlab-org/gitlab/-/issues/343898","tags":["x_refsource_MISC","x_transferred","Broken Link","web","report"]},{"url":"https://hackerone.com/reports/1089609","tags":["x_refsource_MISC","x_transferred","Permissions Required","Third Party Advisory","advisory","report"]},{"url":"https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-4191.json","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-4191","tags":["web"]},{"url":"https://github.com/advisories/GHSA-m37q-w59j-4vr4"},{"url":"https://ubuntu.com/security/CVE-2021-4191","tags":["report"]},{"url":"https://about.gitlab.com/releases/2022/02/25/critical-security-release-gitlab-14-8-2-released/","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-4191","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2021-4191","description":"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.","status":"published","published":"2022-03-28T18:53:12Z","modified":"2024-08-03T17:16:04.293Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"cna"}],"updated_at":"2026-11-02T14:33:08.045407Z"}],"euvd":[{"id":"EUVD-2021-34051","description":"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.","status":"published","published":"2022-03-28T18:53:12Z","modified":"2024-08-03T17:16:04Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-03T03:25:10.418596Z"}],"ghsa":[{"id":"GHSA-m37q-w59j-4vr4","title":"An issue has been discovered in GitLab CE/EE affecting versions 13.0 to 14.6.5, 14.7 to 14.7.4,...","description":"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.","status":"published","published":"2022-03-29T00:01:10Z","modified":"2023-01-27T05:01:04Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:41:48.523978Z"}],"nvd":[{"id":"CVE-2021-4191","description":"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.","status":"published","published":"2022-03-28T19:15:08.093Z","modified":"2026-06-17T04:19:11.42Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:07:05.581807Z"}],"osv":[{"id":"CVE-2021-4191","description":"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.","status":"published","published":"2022-03-28T19:15:08.093Z","modified":"2026-10-30T10:30:49.623830717Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:21.557945Z"},{"id":"UBUNTU-CVE-2021-4191","description":"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.","status":"published","published":"2022-03-28T19:15:00Z","modified":"2025-10-24T04:50:01Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:54:29.220315Z"},{"id":"BIT-gitlab-2021-4191","description":"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.","status":"published","published":"2024-03-06T11:17:13.138Z","modified":"2026-09-08T08:47:38.530812505Z","updated_at":"2026-11-02T15:28:30.405543Z"}]}}