{"id":"CVE-2021-42770","aliases":["EUVD-2021-29727","GHSA-r32j-xgg3-w2rw"],"status":"published","description":"A Cross-site scripting (XSS) vulnerability was discovered in OPNsense before 21.7.4 via the LDAP attribute return in the authentication tester.","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":"2026-11-11","score":0.01374,"percentile":0.72377,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2021-11-08T15:21:32Z","modified":"2026-10-24T10:30:34Z","products":[{"vendor":"opnsense","product":"opnsense"}],"references":[{"url":"https://cert.orange.com","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory"]},{"url":"https://opnsense.org/opnsense-21-7-4-released/","tags":["x_refsource_CONFIRM","x_transferred","Release Notes","Vendor Advisory","advisory"]},{"url":"https://github.com/orangecertcc/security-research/security/advisories/GHSA-r32j-xgg3-w2rw","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","evidence"]}],"sources":{"cve":[{"id":"CVE-2021-42770","description":"A Cross-site scripting (XSS) vulnerability was discovered in OPNsense before 21.7.4 via the LDAP attribute return in the authentication tester.","status":"published","published":"2021-11-08T15:21:32Z","modified":"2024-08-04T03:38:50.227Z","updated_at":"2026-11-02T14:32:58.739039Z"}],"euvd":[{"id":"EUVD-2021-29727","description":"A Cross-site scripting (XSS) vulnerability was discovered in OPNsense before 21.7.4 via the LDAP attribute return in the authentication tester.","status":"published","published":"2021-11-08T15:21:32Z","modified":"2024-08-04T03:38:50Z","updated_at":"2026-11-03T03:24:15.299027Z"}],"nvd":[{"id":"CVE-2021-42770","description":"A Cross-site scripting (XSS) vulnerability was discovered in OPNsense before 21.7.4 via the LDAP attribute return in the authentication tester.","status":"published","published":"2021-11-08T16:15:07.547Z","modified":"2026-06-17T04:10:06.81Z","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":"2026-11-02T14:07:00.984108Z"}],"osv":[{"id":"CVE-2021-42770","description":"A Cross-site scripting (XSS) vulnerability was discovered in OPNsense before 21.7.4 via the LDAP attribute return in the authentication tester.","status":"published","published":"2021-11-08T16:15:07.547Z","modified":"2026-10-24T10:30:34.716157797Z","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"}],"updated_at":"2026-11-02T15:44:21.557945Z"}]}}