{"id":"CVE-2021-3196","aliases":["EUVD-2021-26537","GHSA-9mcv-r5rj-7f62"],"status":"published","title":"An issue was discovered in Hitachi ID Bravura Security Fabric 11.0.0 through 11.1.3, 12.0.0...","description":"An issue was discovered in Hitachi ID Bravura Security Fabric 11.0.0 through 11.1.3, 12.0.0 through 12.0.2, and 12.1.0. When using federated identity management (authenticating via SAML through a third-party identity provider), an attacker can inject additional data into a signed SAML response being transmitted to the service provider (ID Bravura Security Fabric). The application successfully validates the signed values but uses the unsigned malicious values. An attacker with lower-privilege access to the application can inject the username of a high-privilege user to impersonate that user.","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AC:L/AV:N/A:H/C:H/I:H/PR:L/S:U/UI:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00963,"percentile":0.61929,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-347"],"published":"2021-06-09T14:10:56Z","modified":"2026-06-17T04:04:49Z","products":[{"vendor":"hitachi","product":"id_bravura_security_fabric"}],"references":[{"url":"https://www.hitachi.com/hirt/security/index.html","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://www.hitachi.com/hirt/hitachi-sec/2021/601.html","tags":["x_refsource_CONFIRM","x_transferred","Exploit","Vendor Advisory"]},{"url":"https://www.hitachi-id.com/cve-2021-3196-attackers-can-impersonate-another-user","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-3196"},{"url":"https://github.com/advisories/GHSA-9mcv-r5rj-7f62"}],"sources":{"cve":[{"id":"CVE-2021-3196","description":"An issue was discovered in Hitachi ID Bravura Security Fabric 11.0.0 through 11.1.3, 12.0.0 through 12.0.2, and 12.1.0. When using federated identity management (authenticating via SAML through a third-party identity provider), an attacker can inject additional data into a signed SAML response being transmitted to the service provider (ID Bravura Security Fabric). The application successfully validates the signed values but uses the unsigned malicious values. An attacker with lower-privilege access to the application can inject the username of a high-privilege user to impersonate that user.","status":"published","published":"2021-06-09T14:10:56Z","modified":"2024-08-03T16:45:51.39Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AC:L/AV:N/A:H/C:H/I:H/PR:L/S:U/UI:N","level":"high","assessor":"cna"}],"updated_at":"2026-11-02T14:33:03.671751Z"}],"euvd":[{"id":"EUVD-2021-26537","description":"An issue was discovered in Hitachi ID Bravura Security Fabric 11.0.0 through 11.1.3, 12.0.0 through 12.0.2, and 12.1.0. When using federated identity management (authenticating via SAML through a third-party identity provider), an attacker can inject additional data into a signed SAML response being transmitted to the service provider (ID Bravura Security Fabric). The application successfully validates the signed values but uses the unsigned malicious values. An attacker with lower-privilege access to the application can inject the username of a high-privilege user to impersonate that user.","status":"published","published":"2021-06-09T14:10:56Z","modified":"2024-08-03T16:45:51Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AC:L/AV:N/A:H/C:H/I:H/PR:L/S:U/UI:N","level":"high"}],"updated_at":"2026-11-03T03:25:13.531128Z"}],"ghsa":[{"id":"GHSA-9mcv-r5rj-7f62","title":"An issue was discovered in Hitachi ID Bravura Security Fabric 11.0.0 through 11.1.3, 12.0.0...","description":"An issue was discovered in Hitachi ID Bravura Security Fabric 11.0.0 through 11.1.3, 12.0.0 through 12.0.2, and 12.1.0. When using federated identity management (authenticating via SAML through a third-party identity provider), an attacker can inject additional data into a signed SAML response being transmitted to the service provider (ID Bravura Security Fabric). The application successfully validates the signed values but uses the unsigned malicious values. An attacker with lower-privilege access to the application can inject the username of a high-privilege user to impersonate that user.","status":"published","published":"2022-05-24T19:04:33Z","modified":"2023-01-29T05:06:57Z","cwes":["CWE-347"],"updated_at":"2026-11-02T14:46:07.768849Z"}],"nvd":[{"id":"CVE-2021-3196","description":"An issue was discovered in Hitachi ID Bravura Security Fabric 11.0.0 through 11.1.3, 12.0.0 through 12.0.2, and 12.1.0. When using federated identity management (authenticating via SAML through a third-party identity provider), an attacker can inject additional data into a signed SAML response being transmitted to the service provider (ID Bravura Security Fabric). The application successfully validates the signed values but uses the unsigned malicious values. An attacker with lower-privilege access to the application can inject the username of a high-privilege user to impersonate that user.","status":"published","published":"2021-06-09T15:15:08.797Z","modified":"2026-06-17T04:04:49.627Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":6.5,"vector":"AV:N/AC:L/Au:S/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-347"],"updated_at":"2026-11-02T14:06:54.439974Z"}]}}