{"id":"CVE-2021-39914","aliases":["BIT-gitlab-2021-39914","EUVD-2021-26270","GHSA-wvgj-pjc7-8fc4","UBUNTU-CVE-2021-39914"],"status":"published","title":"A regular expression denial of service issue in GitLab versions 8.13 to 14.2.5, 14.3.0 to 14.3.3...","description":"A regular expression denial of service issue in GitLab versions 8.13 to 14.2.5, 14.3.0 to 14.3.3 and 14.4.0 could cause excessive usage of resources when a specially crafted username was used when provisioning a new user","severity":{"version":"3.1","score":3.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.01199,"percentile":0.68561,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-400","CWE-770"],"published":"2021-11-04T22:39:17Z","modified":"2026-10-30T10:31:07Z","fixes":[{"ecosystem":"Bitnami","package":"gitlab","fixed_in":["14.2.6","14.3.4","14.4.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Bitnami","package":"gitlab","ranges":[{"type":"SEMVER","events":[{"introduced":"8.13.0"},{"fixed":"14.2.6"},{"introduced":"14.3.0"},{"fixed":"14.3.4"},{"introduced":"14.4.0"},{"fixed":"14.4.1"}]}]},{"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/289948","tags":["x_refsource_MISC","x_transferred","Broken Link","web","report"]},{"url":"https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39914.json","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-39914","tags":["web"]},{"url":"https://github.com/advisories/GHSA-wvgj-pjc7-8fc4"},{"url":"https://ubuntu.com/security/CVE-2021-39914","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-39914","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2021-39914","description":"A regular expression denial of service issue in GitLab versions 8.13 to 14.2.5, 14.3.0 to 14.3.3 and 14.4.0 could cause excessive usage of resources when a specially crafted username was used when provisioning a new 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