{"id":"CVE-2025-4439","aliases":["BIT-gitlab-2025-4439","EUVD-2025-22463","GHSA-2r7r-6rh2-7qc9","UBUNTU-CVE-2025-4439"],"status":"published","title":"Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab","description":"An issue has been discovered in GitLab CE/EE affecting all versions from 15.10 before 18.0.5, 18.1 before 18.1.3, and 18.2 before 18.2.1 that could have allowed an authenticated user to perform cross-site scripting attacks when the instance is served through certain content delivery networks.","severity":{"version":"3.1","score":7.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.0028,"percentile":0.20695,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-79"],"published":"2025-07-23T18:09:17Z","modified":"2026-11-03T22:03:04Z","fixes":[{"ecosystem":"Bitnami","package":"gitlab","fixed_in":["18.0.5","18.1.3","18.2.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Bitnami","package":"gitlab","ranges":[{"type":"SEMVER","events":[{"introduced":"15.10.0"},{"fixed":"18.0.5"},{"introduced":"18.1.0"},{"fixed":"18.1.3"},{"introduced":"18.2.0"},{"fixed":"18.2.1"}]}]},{"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/541177","tags":["issue-tracking","permissions-required","Broken Link","web","report"]},{"url":"https://hackerone.com/reports/3120111","tags":["technical-description","exploit","permissions-required","Permissions Required","web","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-4439","tags":["web","advisory"]},{"url":"https://github.com/advisories/GHSA-2r7r-6rh2-7qc9"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/4xxx/CVE-2025-4439.json","tags":["advisory"]},{"url":"git://git@gitlab.com:gitlab-org/gitlab.git","tags":["package"]},{"url":"https://ubuntu.com/security/CVE-2025-4439","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2025-4439","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2025-4439","title":"Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab","description":"An issue has been discovered in GitLab CE/EE affecting all versions from 15.10 before 18.0.5, 18.1 before 18.1.3, and 18.2 before 18.2.1 that could have allowed an authenticated user to perform cross-site scripting attacks when the instance is served through certain content delivery networks.","status":"published","published":"2025-07-23T18:09:17.968Z","modified":"2026-11-03T22:03:04.008Z","cvss":[{"version":"3.1","score":7.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-03T23:33:08.294318Z"}],"euvd":[{"id":"EUVD-2025-22463","description":"An issue has been discovered in GitLab CE/EE affecting all versions from 15.10 before 18.0.5, 18.1 before 18.1.3, and 18.2 before 18.2.1 that could have allowed an authenticated user to perform cross-site scripting attacks when the instance is served through certain content delivery networks.","status":"published","published":"2025-07-23T18:09:17Z","modified":"2026-11-03T22:03:04Z","cvss":[{"version":"3.1","score":7.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N","level":"high"}],"updated_at":"2026-11-03T23:01:34.673315Z"}],"ghsa":[{"id":"GHSA-2r7r-6rh2-7qc9","title":"An issue has been discovered in GitLab CE/EE affecting all versions from 15.10 before 18.0.5, 18...","description":"An issue has been discovered in GitLab CE/EE affecting all versions from 15.10 before 18.0.5, 18.1 before 18.1.3, and 18.2 before 18.2.1 that could have allowed an authenticated user to perform cross-site scripting attacks when the instance is served through certain content delivery networks.","status":"published","published":"2025-07-23T18:30:36Z","modified":"2025-07-23T18:30:42Z","cvss":[{"version":"3.1","score":7.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N","level":"high"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:03:06.223067Z"}],"nvd":[{"id":"CVE-2025-4439","description":"An issue has been discovered in GitLab CE/EE affecting all versions from 15.10 before 18.0.5, 18.1 before 18.1.3, and 18.2 before 18.2.1 that could have allowed an authenticated user to perform cross-site scripting attacks when the instance is served through certain content delivery networks.","status":"published","published":"2025-07-23T18:15:27.593Z","modified":"2026-06-17T09:33:15.217Z","cvss":[{"version":"3.1","score":7.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N","level":"high","assessor":"secondary"},{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:11:19.382856Z"}],"osv":[{"id":"CVE-2025-4439","title":"Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab","description":"An issue has been discovered in GitLab CE/EE affecting all versions from 15.10 before 18.0.5, 18.1 before 18.1.3, and 18.2 before 18.2.1 that could have allowed an authenticated user to perform cross-site scripting attacks when the instance is served through certain content delivery networks.","status":"published","published":"2025-07-23T18:09:17.968Z","modified":"2026-11-04T10:30:40.134183676Z","cvss":[{"version":"3.1","score":7.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N","level":"high"}],"cwes":["CWE-79"],"updated_at":"2026-11-04T11:07:30.139212Z"},{"id":"UBUNTU-CVE-2025-4439","description":"An issue has been discovered in GitLab CE/EE affecting all versions from 15.10 before 18.0.5, 18.1 before 18.1.3, and 18.2 before 18.2.1 that could have allowed an authenticated user to perform cross-site scripting attacks when the instance is served through certain content delivery networks.","status":"published","published":"2025-07-23T18:15:00Z","modified":"2025-10-24T05:16:32Z","cvss":[{"version":"3.1","score":7.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N","level":"high"},{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T16:55:50.31802Z"},{"id":"BIT-gitlab-2025-4439","title":"Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab","description":"An issue has been discovered in GitLab CE/EE affecting all versions from 15.10 before 18.0.5, 18.1 before 18.1.3, and 18.2 before 18.2.1 that could have allowed an authenticated user to perform cross-site scripting attacks when the instance is served through certain content delivery networks.","status":"published","published":"2025-07-29T06:06:11.308Z","modified":"2026-09-10T16:01:38.77940533Z","updated_at":"2026-11-02T15:28:30.70064Z"}]}}