{"id":"CVE-2021-22225","aliases":["BIT-gitlab-2021-22225","EUVD-2021-9371","GHSA-27v4-8jv4-3cp6","UBUNTU-CVE-2021-22225"],"status":"published","title":"Insufficient input sanitization in markdown in GitLab version 13.11 and up allows an attacker to...","description":"Insufficient input sanitization in markdown in GitLab version 13.11 and up allows an attacker to exploit a stored cross-site scripting vulnerability via a specially-crafted markdown","severity":{"version":"3.1","score":4.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00555,"percentile":0.46632,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-79"],"published":"2021-07-07T11:19:53Z","modified":"2026-10-30T10:30:43Z","fixes":[{"ecosystem":"Bitnami","package":"gitlab","fixed_in":["13.11.6","13.12.6","14.0.2"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Bitnami","package":"gitlab","ranges":[{"type":"SEMVER","events":[{"introduced":"13.11.3"},{"fixed":"13.11.6"},{"introduced":"13.12.0"},{"fixed":"13.12.6"},{"introduced":"14.0.0"},{"fixed":"14.0.2"}]}]},{"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/331051","tags":["x_refsource_MISC","x_transferred","Broken Link","web","report"]},{"url":"https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22225.json","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory","advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-22225","tags":["web"]},{"url":"https://github.com/advisories/GHSA-27v4-8jv4-3cp6"},{"url":"https://ubuntu.com/security/CVE-2021-22225","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-22225","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2021-22225","description":"Insufficient input sanitization in markdown in GitLab version 13.11 and up allows an attacker to exploit a stored cross-site scripting vulnerability via a specially-crafted 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stored cross-site scripting vulnerability via a specially-crafted markdown","status":"published","published":"2024-03-06T11:19:40.56Z","modified":"2026-09-10T16:01:32.68189263Z","updated_at":"2026-11-02T15:28:29.999658Z"}]}}