{"affected":[{"conditional":false,"product":"gitlab","source":"NVD","vendor":"gitlab","versions":[{"greaterThanOrEqual":"18.10.0","lessThan":"18.10.4","status":"affected","version":"*","versionType":"custom"}]},{"conditional":false,"product":"gitlab","source":"NVD","vendor":"gitlab","versions":[{"status":"affected","version":"18.11.0","versionType":"custom"}]}],"cpeConfigurations":[{"negate":false,"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*","versionEndExcluding":"18.10.4","versionStartIncluding":"18.10.0","vulnerable":true},{"criteria":"cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*","versionEndExcluding":"18.10.4","versionStartIncluding":"18.10.0","vulnerable":true},{"criteria":"cpe:2.3:a:gitlab:gitlab:18.11.0:*:*:*:community:*:*:*","vulnerable":true},{"criteria":"cpe:2.3:a:gitlab:gitlab:18.11.0:*:*:*:enterprise:*:*:*","vulnerable":true}],"negate":false,"operator":"OR"}],"operator":"OR"}],"cveId":"CVE-2026-5816","cwes":["CWE-41"],"description":"GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.10 before 18.10.4 and 18.11 before 18.11.1 that could have allowed an unauthenticated user to execute arbitrary JavaScript in a user's browser session due to improper path validation under certain conditions.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":8.1,"severity":"high","source":"NVD: nvd@nist.gov","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","version":"3.1"},{"score":8,"severity":"high","source":"NVD: cve@gitlab.com","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N","version":"3.1"}],"modifiedAt":1794438600263,"publishedAt":1776878204763,"references":[{"source":"cve@gitlab.com","tags":["Release Notes","Vendor Advisory"],"url":"https://about.gitlab.com/releases/2026/04/22/patch-release-gitlab-18-11-1-released/"},{"source":"cve@gitlab.com","tags":["Broken Link"],"url":"https://gitlab.com/gitlab-org/gitlab/-/work_items/592816"},{"source":"cve@gitlab.com","tags":["Permissions Required"],"url":"https://hackerone.com/reports/3572231"}],"remediation":[],"revision":"8c4b80c8ea290383a82a73227baef858fda3fb7c9420e79c04a02b47f1bb2708","sources":[{"modifiedAt":1794438600263,"name":"NVD","retrievedAt":1794442727108,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-5816"}],"ssvc":{"assessedAt":1776816000000,"automatable":"no","exploitation":"none","source":"NVD SSVC: 134c704f-9b21-4f2e-91b3-4a467353bcc0","technicalImpact":"total"},"status":"published","title":"CVE-2026-5816","updatedAt":1794442727108}