{"id":"CVE-2021-47663","aliases":["EUVD-2025-12115","GHSA-wwjc-h7f8-cqv5"],"status":"published","title":"Improper session handling","description":"Due to improper JSON Web Tokens implementation an unauthenticated remote attacker can guess a valid session ID and therefore impersonate a user to gain full access.","severity":{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00465,"percentile":0.40607,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-613"],"published":"2025-04-24T09:25:23Z","modified":"2026-06-17T04:18:16Z","products":[{"vendor":"franka robotics","product":"franka emika robot"}],"references":[{"url":"https://www.sciencedirect.com/science/article/pii/S2351978921001657"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-47663"},{"url":"https://github.com/advisories/GHSA-wwjc-h7f8-cqv5"}],"sources":{"cve":[{"id":"CVE-2021-47663","title":"Improper session handling","description":"Due to improper JSON Web Tokens implementation an unauthenticated remote attacker can guess a valid session ID and therefore impersonate a user to gain full access.","status":"published","published":"2025-04-24T09:25:23.807Z","modified":"2025-04-24T15:22:23.071Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-613"],"updated_at":"2026-11-02T14:32:55.905855Z"}],"euvd":[{"id":"EUVD-2025-12115","description":"Due to improper JSON Web Tokens implementation an unauthenticated remote attacker can guess a valid session ID and therefore impersonate a user to gain full access.","status":"published","published":"2025-04-24T09:25:23Z","modified":"2025-04-24T15:22:23Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T20:52:04.118749Z"}],"ghsa":[{"id":"GHSA-wwjc-h7f8-cqv5","title":"Due to improper JSON Web Tokens implementation an unauthenticated remote attacker can guess a...","description":"Due to improper JSON Web Tokens implementation an unauthenticated remote attacker can guess a valid session ID and therefore impersonate a user to gain full access.","status":"published","published":"2025-04-24T12:31:28Z","modified":"2025-04-24T12:31:35Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-613"],"updated_at":"2026-11-02T15:02:00.72042Z"}],"nvd":[{"id":"CVE-2021-47663","description":"Due to improper JSON Web Tokens implementation an unauthenticated remote attacker can guess a valid session ID and therefore impersonate a user to gain full access.","status":"published","published":"2025-04-24T10:15:16.703Z","modified":"2026-06-17T04:18:16.64Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-613"],"updated_at":"2026-11-02T14:07:09.005706Z"}]}}