{"id":"CVE-2026-6335","summary":"Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab","details":"GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.11 before 18.11.3 that under certain conditions could have allowed an authenticated user to execute arbitrary code in another user's browser session due to improper sanitization.","aliases":["BIT-gitlab-2026-6335"],"modified":"2026-08-27T11:30:33.271083948Z","published":"2026-05-14T05:33:57.334Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/6xxx/CVE-2026-6335.json","unresolved_ranges":[{"source":"AFFECTED_FIELD","extracted_events":[{"introduced":"18.11"},{"fixed":"18.11.3"}]},{"extracted_events":[{"introduced":"18.11"},{"fixed":"18.11.3"}],"source":"DESCRIPTION"}],"cna_assigner":"GitLab","cwe_ids":["CWE-79"]},"references":[{"type":"WEB","url":"https://about.gitlab.com/releases/2026/05/13/patch-release-gitlab-18-11-3-released/"},{"type":"WEB","url":"https://gitlab.com/gitlab-org/gitlab/-/work_items/596760"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/6xxx/CVE-2026-6335.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-6335"},{"type":"REPORT","url":"https://hackerone.com/reports/3673647"},{"type":"PACKAGE","url":"git://git@gitlab.com:gitlab-org/gitlab.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://gitlab.com/gitlab-org/gitlab","events":[{"introduced":"1060c7b0ff78be7c8abe8fd6d23dcb1ca493fd78"},{"fixed":"daa4145c8330213081c57260b569539e3b157b87"}],"database_specific":{"source":"CPE_RANGE","cpe":["cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*","cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*"],"extracted_events":[{"introduced":"18.11.0"},{"fixed":"18.11.3"}]}}],"versions":["v18.11.2-ee","v18.11.0-ee"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-6335.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"}]}