{"id":"CVE-2021-27292","details":"ua-parser-js \u003e= 0.7.14, fixed in 0.7.24, uses a regular expression which is vulnerable to denial of service. If an attacker sends a malicious User-Agent header, ua-parser-js will get stuck processing it for an extended period of time.","aliases":["GHSA-78cj-fxph-m83p"],"modified":"2026-04-12T00:09:48.500682Z","published":"2021-03-17T13:15:15.200Z","references":[{"type":"FIX","url":"https://github.com/faisalman/ua-parser-js/commit/809439e20e273ce0d25c1d04e111dcf6011eb566"},{"type":"FIX","url":"https://github.com/pygments/pygments/commit/2e7e8c4a7b318f4032493773732754e418279a14"},{"type":"EVIDENCE","url":"https://gist.github.com/b-c-ds/6941d80d6b4e694df4bc269493b7be76"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/faisalman/ua-parser-js","events":[{"introduced":"7ae3098778572742544385938a2726c4efa01a02"},{"fixed":"9999815ac8c969306594c650566695fba3506830"},{"fixed":"809439e20e273ce0d25c1d04e111dcf6011eb566"}],"database_specific":{"source":["CPE_FIELD","REFERENCES"],"extracted_events":[{"introduced":"0.7.14"},{"fixed":"0.7.24"}],"cpe":"cpe:2.3:a:ua-parser-js_project:ua-parser-js:*:*:*:*:*:node.js:*:*"}}],"versions":["0.7.14","0.7.18","0.7.19","0.7.20","0.7.21"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-27292.json"}},{"ranges":[{"type":"GIT","repo":"https://github.com/pygments/pygments","events":[{"introduced":"0"},{"fixed":"2e7e8c4a7b318f4032493773732754e418279a14"}],"database_specific":{"source":"REFERENCES"}}],"versions":["2.1.1","2.4.1","2.4.2","2.5.0","2.5.1","2.5.2","2.6.0","2.6.1","2.7.0","2.7.1","2.7.2","2.7.3"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-27292.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}