{"id":"CVE-2023-5226","aliases":["BIT-gitlab-2023-5226","EUVD-2023-57555","GHSA-6wgj-fxqf-wxj2","UBUNTU-CVE-2023-5226"],"status":"published","title":"Improper Control of Generation of Code ('Code Injection') in GitLab","description":"An issue has been discovered in GitLab affecting all versions before 16.4.3, all versions starting from 16.5 before 16.5.3, all versions starting from 16.6 before 16.6.1. Under certain circumstances, a malicious actor bypass prohibited branch checks using a specially crafted branch name to manipulate repository content in the UI.","severity":{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00546,"percentile":0.46132,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-94"],"published":"2023-12-01T07:01:43Z","modified":"2026-10-30T10:46:39Z","fixes":[{"ecosystem":"Bitnami","package":"gitlab","fixed_in":["16.4.3","16.5.3","16.6.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Bitnami","package":"gitlab","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"16.4.3"},{"introduced":"16.5.0"},{"fixed":"16.5.3"},{"introduced":"16.6.0"},{"fixed":"16.6.1"}]}]},{"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/426400","tags":["issue-tracking","x_transferred","Broken Link","Vendor Advisory","advisory","report"]},{"url":"https://hackerone.com/reports/2173053","tags":["technical-description","exploit","permissions-required","broken-link","x_transferred","Permissions Required","Third Party Advisory","advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-5226","tags":["web","advisory"]},{"url":"https://github.com/advisories/GHSA-6wgj-fxqf-wxj2"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/5xxx/CVE-2023-5226.json","tags":["advisory"]},{"url":"git://git@gitlab.com:gitlab-org/gitlab.git","tags":["package"]},{"url":"https://ubuntu.com/security/CVE-2023-5226","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-5226","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2023-5226","title":"Improper Control of Generation of Code ('Code Injection') in GitLab","description":"An issue has been discovered in GitLab affecting all versions before 16.4.3, all versions starting from 16.5 before 16.5.3, all versions starting from 16.6 before 16.6.1. Under certain circumstances, a malicious actor bypass prohibited branch checks using a specially crafted branch name to manipulate repository content in the UI.","status":"published","published":"2023-12-01T07:01:43.131Z","modified":"2026-08-14T04:13:26.916Z","cvss":[{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-94"],"updated_at":"2026-11-02T14:35:16.771348Z"}],"euvd":[{"id":"EUVD-2023-57555","description":"An issue has been discovered in GitLab affecting all versions before 16.4.3, all versions starting from 16.5 before 16.5.3, all versions starting from 16.6 before 16.6.1. Under certain circumstances, a malicious actor bypass prohibited branch checks using a specially crafted branch name to manipulate repository content in the UI.","status":"published","published":"2023-12-01T07:01:43Z","modified":"2026-08-14T04:13:26Z","cvss":[{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N","level":"medium"}],"updated_at":"2026-11-02T18:01:55.248337Z"}],"ghsa":[{"id":"GHSA-6wgj-fxqf-wxj2","title":"An issue has been discovered in GitLab affecting all versions before 16.4.3, all versions...","description":"An issue has been discovered in GitLab affecting all versions before 16.4.3, all versions starting from 16.5 before 16.5.3, all versions starting from 16.6 before 16.6.1. Under certain circumstances, a malicious actor bypass prohibited branch checks using a specially crafted branch name to manipulate repository content in the UI.","status":"published","published":"2023-12-01T09:30:44Z","modified":"2023-12-01T09:30:44Z","cvss":[{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N","level":"medium"}],"cwes":["CWE-94"],"updated_at":"2026-11-02T14:55:08.006495Z"}],"nvd":[{"id":"CVE-2023-5226","description":"An issue has been discovered in GitLab affecting all versions before 16.4.3, all versions starting from 16.5 before 16.5.3, all versions starting from 16.6 before 16.6.1. Under certain circumstances, a malicious actor bypass prohibited branch checks using a specially crafted branch name to manipulate repository content in the UI.","status":"published","published":"2023-12-01T07:15:12.003Z","modified":"2026-06-17T06:48:07.42Z","cvss":[{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"primary"}],"cwes":["CWE-94"],"updated_at":"2026-11-02T14:08:52.544469Z"}],"osv":[{"id":"CVE-2023-5226","title":"Improper Control of Generation of Code ('Code Injection') in GitLab","description":"An issue has been discovered in GitLab affecting all versions before 16.4.3, all versions starting from 16.5 before 16.5.3, all versions starting from 16.6 before 16.6.1. Under certain circumstances, a malicious actor bypass prohibited branch checks using a specially crafted branch name to manipulate repository content in the UI.","status":"published","published":"2023-12-01T07:01:43.131Z","modified":"2026-10-30T10:46:39.840408391Z","cvss":[{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N","level":"medium"}],"cwes":["CWE-94"],"updated_at":"2026-11-02T15:44:35.245372Z"},{"id":"UBUNTU-CVE-2023-5226","description":"An issue has been discovered in GitLab affecting all versions before 16.4.3, all versions starting from 16.5 before 16.5.3, all versions starting from 16.6 before 16.6.1. Under certain circumstances, a malicious actor bypass prohibited branch checks using a specially crafted branch name to manipulate repository content in the UI.","status":"published","published":"2023-12-01T07:15:00Z","modified":"2025-10-24T05:01:36Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"},{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N","level":"medium"}],"updated_at":"2026-11-02T16:54:23.935133Z"},{"id":"BIT-gitlab-2023-5226","title":"Improper Control of Generation of Code ('Code Injection') in GitLab","description":"An issue has been discovered in GitLab affecting all versions before 16.4.3, all versions starting from 16.5 before 16.5.3, all versions starting from 16.6 before 16.6.1. Under certain circumstances, a malicious actor bypass prohibited branch checks using a specially crafted branch name to manipulate repository content in the UI.","status":"published","published":"2024-03-06T10:57:05.691Z","modified":"2026-09-08T08:47:43.535470994Z","updated_at":"2026-11-02T15:28:30.405543Z"}]}}