{"id":"CVE-2021-4179","aliases":["BIT-livehelperchat-2021-4179","EUVD-2021-34040","GHSA-5x52-v7fr-j269"],"status":"published","title":"Cross-site Scripting (XSS) - Stored in livehelperchat/livehelperchat","description":"livehelperchat is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","severity":{"version":"3.0","score":6.6,"vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00475,"percentile":0.41491,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-79"],"published":"2021-12-28T08:35:09Z","modified":"2026-10-20T10:54:59Z","fixes":[{"ecosystem":"Bitnami","package":"livehelperchat","fixed_in":["3.91.0"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Bitnami","package":"livehelperchat","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"3.91.0"}]}]}],"products":[{"vendor":"livehelperchat","product":"live_helper_chat"},{"vendor":"livehelperchat","product":"livehelperchat/livehelperchat"}],"references":[{"url":"https://huntr.dev/bounties/8df06513-c57d-4a55-9798-0a1f6c153535","tags":["x_refsource_CONFIRM","x_transferred","Exploit","Issue Tracking","Patch","Third Party Advisory","web","fix"]},{"url":"https://github.com/livehelperchat/livehelperchat/commit/c3881fb528af349bf47f9ccbf83c994087faa3e6","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","web","fix"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-4179"},{"url":"https://github.com/advisories/GHSA-5x52-v7fr-j269"}],"sources":{"cve":[{"id":"CVE-2021-4179","title":"Cross-site Scripting (XSS) - Stored in livehelperchat/livehelperchat","description":"livehelperchat is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","status":"published","published":"2021-12-28T08:35:09Z","modified":"2024-08-03T17:16:04.269Z","cvss":[{"version":"3.0","score":6.6,"vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:33:08.045407Z"}],"euvd":[{"id":"EUVD-2021-34040","description":"livehelperchat is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","status":"published","published":"2021-12-28T08:35:09Z","modified":"2024-08-03T17:16:04Z","cvss":[{"version":"3.0","score":6.6,"vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H","level":"medium"}],"updated_at":"2026-11-03T03:25:10.418596Z"}],"ghsa":[{"id":"GHSA-5x52-v7fr-j269","title":"livehelperchat is vulnerable to Improper Neutralization of Input During Web Page Generation (...","description":"livehelperchat is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","status":"published","published":"2021-12-29T00:00:45Z","modified":"2023-02-03T05:03:53Z","cwes":["CWE-79"],"updated_at":"2026-11-02T14:53:26.852274Z"}],"nvd":[{"id":"CVE-2021-4179","description":"livehelperchat is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","status":"published","published":"2021-12-28T09:15:06.933Z","modified":"2026-06-17T04:19:09.97Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"},{"version":"3.0","score":6.6,"vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H","level":"medium","assessor":"secondary"},{"version":"2.0","score":3.5,"vector":"AV:N/AC:M/Au:S/C:N/I:P/A:N","level":"low","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:07:02.977492Z"}],"osv":[{"id":"CVE-2021-4179","description":"livehelperchat is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","status":"published","published":"2021-12-28T09:15:06.933Z","modified":"2026-10-20T10:54:59.021014182Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:21.557945Z"},{"id":"BIT-livehelperchat-2021-4179","description":"livehelperchat is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","status":"published","published":"2024-03-06T10:58:07.98Z","modified":"2024-03-06T11:25:28.861Z","updated_at":"2026-11-02T15:28:32.645004Z"}]}}