{"id":"CVE-2021-3740","details":"A Session Fixation vulnerability exists in chatwoot/chatwoot versions prior to 2.4.0. The application does not invalidate existing sessions on other devices when a user changes their password, allowing old sessions to persist. This can lead to unauthorized access if an attacker has obtained a session token.","modified":"2026-08-07T17:28:11.844842Z","published":"2024-11-15T11:15:04.987Z","references":[{"type":"WEB","url":"https://huntr.com/bounties/1625470476437-chatwoot/chatwoot"},{"type":"FIX","url":"https://github.com/chatwoot/chatwoot/commit/6fdd4a29969be8423f31890b807d27d13627c50c"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/chatwoot/chatwoot","events":[{"introduced":"0"},{"fixed":"480eb3043c9ee79d6e8e6eacf981f49cfe00f6ed"},{"fixed":"6fdd4a29969be8423f31890b807d27d13627c50c"}],"database_specific":{"cpe":"cpe:2.3:a:chatwoot:chatwoot:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"fixed":"2.4.0"}],"source":["CPE_RANGE","REFERENCES"]}}],"versions":["v2.3.2","v2.3.1","v2.3.0","v2.2.1","v2.2.0","v2.1.1","v2.1.0","v2.0.2","v2.0.1","v2.0.0","v1.22.1","v1.22.0","v1.21.1","v1.21.0","v1.20.0","v1.19.0","v1.18.1","v1.18.0","v1.17.1","v1.17.0","v1.16.2","v1.16.1","v1.15.1","v1.15.0","v1.14.3","v1.14.2","v1.14.1","v1.14.0","v1.13.1","v1.13.0","v1.12.2","v1.12.1","v1.12.0","v1.11.1","v1.11.0","v1.10.0","v1.9.0","v1.8.0","v1.7.2","v1.7.1","v1.7.0","v1.6.3","v1.6.2","v1.6.1","v1.6.0","v1.5.3","v1.5.2","v1.5.1","v1.5.0","v1.4.2","1.4.2","v1.4.1","v1.4.0","v1.3.0","v1.2.4","1.2.4","v1.2.3","v1.2.2","v1.2.1","v1.2.0","v1.1.3","v1.1.2","v1.1.1","v1.1.0","v1.0.3","v1.0.2","v1.0.1","v1.0.0","v0.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-3740.json"}}],"schema_version":"1.8.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:A/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H"}]}