{"id":"CVE-2025-4439","summary":"Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab","details":"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.","aliases":["BIT-gitlab-2025-4439"],"modified":"2026-04-10T05:26:49.000790Z","published":"2025-07-23T18:09:17.968Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/4xxx/CVE-2025-4439.json","cwe_ids":["CWE-79"],"cna_assigner":"GitLab"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/4xxx/CVE-2025-4439.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-4439"},{"type":"REPORT","url":"https://gitlab.com/gitlab-org/gitlab/-/issues/541177"},{"type":"REPORT","url":"https://hackerone.com/reports/3120111"},{"type":"PACKAGE","url":"git://git@gitlab.com:gitlab-org/gitlab.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://gitlab.com/gitlab-org/gitlab","events":[{"introduced":"defe6e7f8821c58e67a2e909ef8d36463d76e7e8"},{"fixed":"5ca0e4219f737f6f0cd4b3f882dfabd5a923e559"}],"database_specific":{"versions":[{"introduced":"15.10"},{"fixed":"18.0.5"}]}},{"type":"GIT","repo":"https://gitlab.com/gitlab-org/gitlab","events":[{"introduced":"e0f3b86408aa4e7f03b63ac9e7dba6de1df14e93"},{"fixed":"c7ee7561779f200b01cfef218bac36f6688e6d75"}],"database_specific":{"versions":[{"introduced":"18.1"},{"fixed":"18.1.3"}]}},{"type":"GIT","repo":"https://gitlab.com/gitlab-org/gitlab","events":[{"introduced":"64403a0daee4413eb45b939590f37c351b8e72bf"},{"fixed":"289574e3868fe846e00792ca15174fdb20a506ab"}],"database_specific":{"versions":[{"introduced":"18.2"},{"fixed":"18.2.1"}]}}],"versions":["v18.1.0-ee","v18.2.0-ee"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-4439.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N"}]}