{"id":"CVE-2021-40868","aliases":["EUVD-2021-28023","GHSA-66gc-ch9m-r42v"],"status":"published","title":"In Cloudron 6.2, the returnTo parameter on the login page is vulnerable to Reflected XSS.","description":"In Cloudron 6.2, the returnTo parameter on the login page is vulnerable to Reflected XSS.","severity":{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-12","score":0.09071,"percentile":0.95364,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-79"],"published":"2021-09-21T16:49:34Z","modified":"2026-06-17T04:07:34Z","exploits":[{"source":"exploitdb","id":"EDB-50317","title":"Cloudron 6.2 - 'returnTo ' Cross Site Scripting (Reflected)","type":"webapps","platform":"multiple","date":"2021-09-22","url":"https://www.exploit-db.com/exploits/50317"},{"source":"nuclei","id":"CVE-2021-40868","title":"Cloudron 6.2 Cross-Site Scripting","type":"detection template","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-40868.yaml"}],"products":[{"vendor":"cloudron","product":"cloudron"}],"references":[{"url":"https://www.cloudron.io/","tags":["x_refsource_MISC","x_transferred","Product"]},{"url":"https://packetstormsecurity.com/files/164183/Cloudron-6.2-Cross-Site-Scripting.html","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","VDB Entry"]},{"url":"http://packetstormsecurity.com/files/164255/Cloudron-6.2-Cross-Site-Scripting.html","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-40868"},{"url":"https://github.com/advisories/GHSA-66gc-ch9m-r42v"}],"sources":{"cve":[{"id":"CVE-2021-40868","description":"In Cloudron 6.2, the returnTo parameter on the login page is vulnerable to Reflected XSS.","status":"published","published":"2021-09-21T16:49:34Z","modified":"2024-08-04T02:51:07.772Z","updated_at":"2026-11-02T14:33:01.495293Z"}],"euvd":[{"id":"EUVD-2021-28023","description":"In Cloudron 6.2, the returnTo parameter on the login page is vulnerable to Reflected XSS.","status":"published","published":"2021-09-21T16:49:34Z","modified":"2024-08-04T02:51:07Z","updated_at":"2026-11-03T03:24:19.692229Z"}],"ghsa":[{"id":"GHSA-66gc-ch9m-r42v","title":"In Cloudron 6.2, the returnTo parameter on the login page is vulnerable to Reflected XSS.","description":"In Cloudron 6.2, the returnTo parameter on the login page is vulnerable to Reflected XSS.","status":"published","published":"2022-05-24T19:15:24Z","modified":"2023-01-30T05:02:26Z","cwes":["CWE-79"],"updated_at":"2026-11-02T14:46:38.066268Z"}],"nvd":[{"id":"CVE-2021-40868","description":"In Cloudron 6.2, the returnTo parameter on the login page is vulnerable to Reflected XSS.","status":"published","published":"2021-09-21T17:15:09.947Z","modified":"2026-06-17T04:07:34.25Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:06:58.933037Z"}]}}