{"id":"CVE-2021-21491","aliases":["EUVD-2021-8764","GHSA-5hw2-3847-332f"],"status":"published","title":"SAP Netweaver Application Server Java (Applications based on WebDynpro Java) versions 7.00, 7.10,...","description":"SAP Netweaver Application Server Java (Applications based on WebDynpro Java) versions 7.00, 7.10, 7.11, 7.20, 7.30, 7.31, 7.40, 7.50, allow an attacker to redirect users to a malicious site due to Reverse Tabnabbing vulnerabilities.","severity":{"version":"3.0","score":4.7,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00689,"percentile":0.53221,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-601"],"published":"2021-03-10T14:11:46Z","modified":"2026-06-17T03:35:40Z","products":[{"vendor":"sap","product":"netweaver_application_server_java"},{"vendor":"sap se","product":"sap netweaver application server java (applications based on web dynpro java)"}],"references":[{"url":"https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=571343107","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://launchpad.support.sap.com/#/notes/2976947","tags":["x_refsource_MISC","x_transferred","Permissions Required","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-21491"},{"url":"https://github.com/advisories/GHSA-5hw2-3847-332f"}],"sources":{"cve":[{"id":"CVE-2021-21491","description":"SAP Netweaver Application Server Java (Applications based on WebDynpro Java) versions 7.00, 7.10, 7.11, 7.20, 7.30, 7.31, 7.40, 7.50, allow an attacker to redirect users to a malicious site due to Reverse Tabnabbing vulnerabilities.","status":"published","published":"2021-03-10T14:11:46Z","modified":"2024-08-03T18:16:22.599Z","cvss":[{"version":"3.0","score":4.7,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N","level":"medium","assessor":"cna"}],"updated_at":"2026-11-02T14:33:00.137099Z"}],"euvd":[{"id":"EUVD-2021-8764","description":"SAP Netweaver Application Server Java (Applications based on WebDynpro Java) versions 7.00, 7.10, 7.11, 7.20, 7.30, 7.31, 7.40, 7.50, allow an attacker to redirect users to a malicious site due to Reverse Tabnabbing vulnerabilities.","status":"published","published":"2021-03-10T14:11:46Z","modified":"2024-08-03T18:16:22Z","cvss":[{"version":"3.0","score":4.7,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N","level":"medium"}],"updated_at":"2026-11-03T03:25:05.745586Z"}],"ghsa":[{"id":"GHSA-5hw2-3847-332f","title":"SAP Netweaver Application Server Java (Applications based on WebDynpro Java) versions 7.00, 7.10,...","description":"SAP Netweaver Application Server Java (Applications based on WebDynpro Java) versions 7.00, 7.10, 7.11, 7.20, 7.30, 7.31, 7.40, 7.50, allow an attacker to redirect users to a malicious site due to Reverse Tabnabbing vulnerabilities.","status":"published","published":"2022-05-24T17:44:13Z","modified":"2023-01-29T05:05:59Z","cwes":["CWE-601"],"updated_at":"2026-11-02T14:45:55.193009Z"}],"nvd":[{"id":"CVE-2021-21491","description":"SAP Netweaver Application Server Java (Applications based on WebDynpro Java) versions 7.00, 7.10, 7.11, 7.20, 7.30, 7.31, 7.40, 7.50, allow an attacker to redirect users to a malicious site due to Reverse Tabnabbing vulnerabilities.","status":"published","published":"2021-03-10T15:15:12.82Z","modified":"2026-06-17T03:35:40.563Z","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":"3.0","score":4.7,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N","level":"medium","assessor":"secondary"},{"version":"2.0","score":5.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-601"],"updated_at":"2026-11-02T14:06:50.399901Z"}]}}