{"id":"CVE-2021-40900","aliases":["EUVD-2021-28055","GHSA-6m39-m6c5-cfp9"],"status":"published","title":"A Regular Expression Denial of Service (ReDOS) vulnerability was discovered in regexfn v1.0.5...","description":"A Regular Expression Denial of Service (ReDOS) vulnerability was discovered in regexfn v1.0.5 when validating crafted invalid emails.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.01054,"percentile":0.6463,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-1333"],"published":"2022-06-27T11:33:09Z","modified":"2026-06-17T04:07:37Z","products":[{"vendor":"regexfn_project","product":"regexfn"}],"references":[{"url":"https://github.com/yetingli/SaveResults/blob/main/js/regexfn.js","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-40900"},{"url":"https://github.com/advisories/GHSA-6m39-m6c5-cfp9"}],"sources":{"cve":[{"id":"CVE-2021-40900","description":"A Regular Expression Denial of Service (ReDOS) vulnerability was discovered in regexfn v1.0.5 when validating crafted invalid emails.","status":"published","published":"2022-06-27T11:33:09Z","modified":"2024-08-04T02:51:07.8Z","updated_at":"2026-11-02T14:33:01.852999Z"}],"euvd":[{"id":"EUVD-2021-28055","description":"A Regular Expression Denial of Service (ReDOS) vulnerability was discovered in regexfn v1.0.5 when validating crafted invalid emails.","status":"published","published":"2022-06-27T11:33:09Z","modified":"2024-08-04T02:51:07Z","updated_at":"2026-11-03T03:24:19.692229Z"}],"ghsa":[{"id":"GHSA-6m39-m6c5-cfp9","title":"A Regular Expression Denial of Service (ReDOS) vulnerability was discovered in regexfn v1.0.5...","description":"A Regular Expression Denial of Service (ReDOS) vulnerability was discovered in regexfn v1.0.5 when validating crafted invalid emails.","status":"published","published":"2022-06-28T00:01:01Z","modified":"2023-01-27T05:05:03Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T14:42:36.711116Z"}],"nvd":[{"id":"CVE-2021-40900","description":"A Regular Expression Denial of Service (ReDOS) vulnerability was discovered in regexfn v1.0.5 when validating crafted invalid emails.","status":"published","published":"2022-06-27T13:15:07.81Z","modified":"2026-06-17T04:07:37.04Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-1333"],"updated_at":"2026-11-02T14:07:06.501652Z"}]}}