{"id":"CVE-2021-42564","aliases":["EUVD-2021-29532","GHSA-pq7g-984r-4j7x"],"status":"published","title":"An open redirect through HTML injection in confidential messages in Cryptshare before 5.1.0...","description":"An open redirect through HTML injection in confidential messages in Cryptshare before 5.1.0 allows remote attackers (with permission to provide confidential messages via Cryptshare) to redirect targeted victims to any URL via the '\u003cmeta http-equiv=\"refresh\"' substring in the editor parameter.","severity":{"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","from":"nvd"},"epss":{"day":"2026-11-10","score":0.00687,"percentile":0.53021,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-601"],"published":"2021-11-30T19:15:16Z","modified":"2026-06-17T04:09:50Z","products":[{"vendor":"cryptshare","product":"cryptshare_server"}],"references":[{"url":"https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2021-057.txt","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-42564"},{"url":"https://github.com/advisories/GHSA-pq7g-984r-4j7x"}],"sources":{"cve":[{"id":"CVE-2021-42564","description":"An open redirect through HTML injection in confidential messages in Cryptshare before 5.1.0 allows remote attackers (with permission to provide confidential messages via Cryptshare) to redirect targeted victims to any URL via the '\u003cmeta http-equiv=\"refresh\"' substring in the editor parameter.","status":"published","published":"2021-11-30T19:15:16Z","modified":"2024-08-04T03:38:49.313Z","updated_at":"2026-11-02T14:32:58.739039Z"}],"euvd":[{"id":"EUVD-2021-29532","description":"An open redirect through HTML injection in confidential messages in Cryptshare before 5.1.0 allows remote attackers (with permission to provide confidential messages via Cryptshare) to redirect targeted victims to any URL via the '\u003cmeta http-equiv=\"refresh\"' substring in the editor parameter.","status":"published","published":"2021-11-30T19:15:16Z","modified":"2024-08-04T03:38:49Z","updated_at":"2026-11-03T03:24:15.755984Z"}],"ghsa":[{"id":"GHSA-pq7g-984r-4j7x","title":"An open redirect through HTML injection in confidential messages in Cryptshare before 5.1.0...","description":"An open redirect through HTML injection in confidential messages in Cryptshare before 5.1.0 allows remote attackers (with permission to provide confidential messages via Cryptshare) to redirect targeted victims to any URL via the '\u003cmeta http-equiv=\"refresh\"' substring in the editor parameter.","status":"published","published":"2021-12-01T00:00:38Z","modified":"2023-02-01T05:06:31Z","cwes":["CWE-601"],"updated_at":"2026-11-02T14:50:21.781869Z"}],"nvd":[{"id":"CVE-2021-42564","description":"An open redirect through HTML injection in confidential messages in Cryptshare before 5.1.0 allows remote attackers (with permission to provide confidential messages via Cryptshare) to redirect targeted victims to any URL via the '\u003cmeta http-equiv=\"refresh\"' substring in the editor parameter.","status":"published","published":"2021-11-30T20:15:07.587Z","modified":"2026-06-17T04:09:50.383Z","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":"2.0","score":4.9,"vector":"AV:N/AC:M/Au:S/C:P/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-601"],"updated_at":"2026-11-02T14:07:01.811115Z"}]}}