{"id":"CVE-2021-3741","aliases":["EUVD-2021-27017","GHSA-jwrg-4wf2-p7jw"],"status":"published","title":"Stored Cross-site Scripting (XSS) in chatwoot/chatwoot","description":"A stored cross-site scripting (XSS) vulnerability was discovered in chatwoot/chatwoot, affecting all versions prior to 2.6. The vulnerability occurs when a user uploads an SVG file containing a malicious XSS payload in the profile settings. When the avatar is opened in a new page, the custom JavaScript code is executed, leading to potential security risks.","severity":{"version":"3.0","score":7.8,"vector":"CVSS:3.0/AV:A/AC:L/PR:H/UI:R/S:C/C:H/I:L/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00301,"percentile":0.22992,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2024-11-15T10:51:22Z","modified":"2026-10-20T10:54:49Z","products":[{"vendor":"chatwoot","product":"chatwoot"},{"vendor":"chatwoot","product":"chatwoot/chatwoot"}],"references":[{"url":"https://huntr.com/bounties/1625474692857-chatwoot/chatwoot","tags":["Broken Link","web"]},{"url":"https://github.com/chatwoot/chatwoot/commit/6fdd4a29969be8423f31890b807d27d13627c50c","tags":["Product","fix"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-3741"},{"url":"https://github.com/advisories/GHSA-jwrg-4wf2-p7jw"}],"sources":{"cve":[{"id":"CVE-2021-3741","title":"Stored Cross-site Scripting (XSS) in chatwoot/chatwoot","description":"A stored cross-site scripting (XSS) vulnerability was discovered in chatwoot/chatwoot, affecting all versions prior to 2.6. The vulnerability occurs when a user uploads an SVG file containing a malicious XSS payload in the profile settings. When the avatar is opened in a new page, the custom JavaScript code is executed, leading to potential security risks.","status":"published","published":"2024-11-15T10:51:22.667Z","modified":"2024-11-20T22:36:41.76Z","cvss":[{"version":"3.0","score":7.8,"vector":"CVSS:3.0/AV:A/AC:L/PR:H/UI:R/S:C/C:H/I:L/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:33:04.020035Z"}],"euvd":[{"id":"EUVD-2021-27017","description":"A stored cross-site scripting (XSS) vulnerability was discovered in chatwoot/chatwoot, affecting all versions prior to 2.6. The vulnerability occurs when a user uploads an SVG file containing a malicious XSS payload in the profile settings. When the avatar is opened in a new page, the custom JavaScript code is executed, leading to potential security risks.","status":"published","published":"2024-11-15T10:51:22Z","modified":"2024-11-20T22:36:41Z","cvss":[{"version":"3.0","score":7.8,"vector":"CVSS:3.0/AV:A/AC:L/PR:H/UI:R/S:C/C:H/I:L/A:H","level":"high"}],"updated_at":"2026-11-03T00:04:53.318425Z"}],"ghsa":[{"id":"GHSA-jwrg-4wf2-p7jw","title":"A stored cross-site scripting (XSS) vulnerability was discovered in chatwoot/chatwoot, affecting...","description":"A stored cross-site scripting (XSS) vulnerability was discovered in chatwoot/chatwoot, affecting all versions prior to 2.6. The vulnerability occurs when a user uploads an SVG file containing a malicious XSS payload in the profile settings. When the avatar is opened in a new page, the custom JavaScript code is executed, leading to potential security risks.","status":"published","published":"2024-11-15T12:31:44Z","modified":"2024-11-15T12:31:45Z","cvss":[{"version":"3.0","score":7.8,"vector":"CVSS:3.0/AV:A/AC:L/PR:H/UI:R/S:C/C:H/I:L/A:H","level":"high"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:58:51.371243Z"}],"nvd":[{"id":"CVE-2021-3741","description":"A stored cross-site scripting (XSS) vulnerability was discovered in chatwoot/chatwoot, affecting all versions prior to 2.6. The vulnerability occurs when a user uploads an SVG file containing a malicious XSS payload in the profile settings. When the avatar is opened in a new page, the custom JavaScript code is executed, leading to potential security risks.","status":"published","published":"2024-11-15T11:15:05.327Z","modified":"2026-06-17T04:05:40.57Z","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":7.8,"vector":"CVSS:3.0/AV:A/AC:L/PR:H/UI:R/S:C/C:H/I:L/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:07:08.629518Z"}],"osv":[{"id":"CVE-2021-3741","description":"A stored cross-site scripting (XSS) vulnerability was discovered in chatwoot/chatwoot, affecting all versions prior to 2.6. The vulnerability occurs when a user uploads an SVG file containing a malicious XSS payload in the profile settings. When the avatar is opened in a new page, the custom JavaScript code is executed, leading to potential security risks.","status":"published","published":"2024-11-15T11:15:05.327Z","modified":"2026-10-20T10:54:49.267281813Z","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":"2026-11-02T15:44:20.434873Z"}]}}