{"id":"CVE-2021-4049","aliases":["BIT-livehelperchat-2021-4049","GHSA-h86j-6h6m-qjqw"],"url":"https://o3.security/vulnerability/CVE-2021-4049","summary":"Cross-Site Request Forgery in remdex/livehelperchat","details":"An attacker is able to log out a user if a logged-in user visits the attacker's website. While this cannot harm a user's account, it can be a great annoyance and is a valid CSRF.","published":"2021-12-07T11:15:08.087Z","modified":"2026-08-07T17:02:45.881555Z","cvss":{"score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"Packagist","name":"remdex/livehelperchat","fixedVersion":null}],"fix":{"url":"https://github.com/livehelperchat/livehelperchat/commit/e7fe1aa6a087d4d21b2e8a0dadd2e08f42acbb57","label":"livehelperchat/livehelperchat@e7fe1aa"},"references":[{"type":"FIX","url":"https://github.com/livehelperchat/livehelperchat/commit/e7fe1aa6a087d4d21b2e8a0dadd2e08f42acbb57"},{"type":"FIX","url":"https://huntr.dev/bounties/62408fa4-2c16-4fcd-8b34-41fcdccb779e"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-4049"},{"type":"PACKAGE","url":"https://github.com/livehelperchat/livehelperchat"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-07T17:02:45.881555Z"}}