{"id":"CVE-2021-22256","aliases":["BIT-gitlab-2021-22256","EUVD-2021-9402","GHSA-6xw3-8926-pq6q","UBUNTU-CVE-2021-22256"],"status":"published","title":"Improper authorization in GitLab CE/EE affecting all versions since 12.6 allowed guest users to...","description":"Improper authorization in GitLab CE/EE affecting all versions since 12.6 allowed guest users to create issues for Sentry errors and track their status","severity":{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00729,"percentile":0.54553,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-863"],"published":"2021-08-25T18:30:43Z","modified":"2026-10-30T10:30:45Z","fixes":[{"ecosystem":"Bitnami","package":"gitlab","fixed_in":["13.12.9","14.0.7","14.1.2"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Bitnami","package":"gitlab","ranges":[{"type":"SEMVER","events":[{"introduced":"12.6.0"},{"fixed":"13.12.9"},{"introduced":"14.0.0"},{"fixed":"14.0.7"},{"introduced":"14.1.0"},{"fixed":"14.1.2"}]}]},{"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/326948","tags":["x_refsource_MISC","x_transferred","Broken Link","web","report"]},{"url":"https://hackerone.com/reports/1117768","tags":["x_refsource_MISC","x_transferred","Permissions Required","Third Party Advisory","advisory","report"]},{"url":"https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22256.json","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory","advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-22256","tags":["web"]},{"url":"https://github.com/advisories/GHSA-6xw3-8926-pq6q"},{"url":"https://ubuntu.com/security/CVE-2021-22256","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-22256","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2021-22256","description":"Improper authorization in GitLab CE/EE affecting all versions since 12.6 allowed guest users to create issues for Sentry errors and track their 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