{"id":"CVE-2021-3649","aliases":["EUVD-2021-26945","GHSA-964r-mpxx-74p7"],"status":"published","title":"Inefficient Regular Expression Complexity in chatwoot/chatwoot","description":"chatwoot is vulnerable to Inefficient Regular Expression Complexity","severity":{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.01222,"percentile":0.69137,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-1333","CWE-400","CWE-697"],"published":"2021-07-16T13:33:25Z","modified":"2026-10-20T10:54:19Z","products":[{"vendor":"chatwoot","product":"chatwoot"},{"vendor":"chatwoot","product":"chatwoot/chatwoot"}],"references":[{"url":"https://huntr.dev/bounties/1625088985607-chatwoot/chatwoot","tags":["x_refsource_CONFIRM","x_transferred","Exploit","Issue Tracking","Patch","Third Party Advisory","fix"]},{"url":"https://github.com/chatwoot/chatwoot/commit/aa7db90cd2d23dbcf22a94f1e4c100dd909e2172","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-3649"},{"url":"https://github.com/advisories/GHSA-964r-mpxx-74p7"}],"sources":{"cve":[{"id":"CVE-2021-3649","title":"Inefficient Regular Expression Complexity in chatwoot/chatwoot","description":"chatwoot is vulnerable to Inefficient Regular Expression Complexity","status":"published","published":"2021-07-16T13:33:25Z","modified":"2024-08-03T17:01:07.709Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-1333"],"updated_at":"2026-11-02T14:33:04.020035Z"}],"euvd":[{"id":"EUVD-2021-26945","description":"chatwoot is vulnerable to Inefficient Regular Expression Complexity","status":"published","published":"2021-07-16T13:33:25Z","modified":"2024-08-03T17:01:07Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-03T03:25:12.535968Z"}],"ghsa":[{"id":"GHSA-964r-mpxx-74p7","title":"chatwoot is vulnerable to Inefficient Regular Expression Complexity","description":"chatwoot is vulnerable to Inefficient Regular Expression Complexity","status":"published","published":"2022-05-24T19:08:17Z","modified":"2023-01-27T05:03:21Z","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"}],"cwes":["CWE-400","CWE-697"],"updated_at":"2026-11-02T14:42:13.826528Z"}],"nvd":[{"id":"CVE-2021-3649","description":"chatwoot is vulnerable to Inefficient Regular Expression Complexity","status":"published","published":"2021-07-16T14:15:08.063Z","modified":"2026-06-17T04:05:30.313Z","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":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"},{"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":"2026-11-02T14:06:55.747384Z"}],"osv":[{"id":"CVE-2021-3649","description":"chatwoot is vulnerable to Inefficient Regular Expression Complexity","status":"published","published":"2021-07-16T14:15:08.063Z","modified":"2026-10-20T10:54:19.695251333Z","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":"2026-11-02T15:44:20.434873Z"}]}}