{"id":"CVE-2025-30064","aliases":["EUVD-2025-27774","GHSA-qhgj-gg86-h6q2"],"status":"published","title":"Possibility to generate a session for any user via the \"ex:action\" parameter after obtaining access to the JWT key","description":"An insufficiently secured internal function allows session generation for arbitrary users. The decodeParam function checks the JWT but does not verify which signing algorithm was used. As a result, an attacker can use the \"ex:action\" parameter in the VerifyUserByThrustedService function to generate a session for any user.","severity":{"version":"4.0","score":8.8,"vector":"CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00085,"percentile":0.00262,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-347","CWE-912"],"published":"2025-08-27T10:25:20Z","modified":"2026-06-17T09:08:06Z","products":[{"vendor":"cgm","product":"cgm clininet"}],"references":[{"url":"https://cert.pl/en/posts/2025/08/CVE-2025-2313/"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-30064"},{"url":"https://cert.pl/en/posts/2025/08/CVE-2025-2313"},{"url":"https://github.com/advisories/GHSA-qhgj-gg86-h6q2"}],"sources":{"cve":[{"id":"CVE-2025-30064","title":"Possibility to generate a session for any user via the \"ex:action\" parameter after obtaining access to the JWT key","description":"An insufficiently secured internal function allows session generation for arbitrary users. The decodeParam function checks the JWT but does not verify which signing algorithm was used. As a result, an attacker can use the \"ex:action\" parameter in the VerifyUserByThrustedService function to generate a session for any user.","status":"published","published":"2025-08-27T10:25:20.09Z","modified":"2025-08-27T13:25:58.795Z","cvss":[{"version":"4.0","score":8.8,"vector":"CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","level":"high","assessor":"cna"}],"cwes":["CWE-912","CWE-347"],"updated_at":"2026-11-02T14:32:35.418416Z"}],"euvd":[{"id":"EUVD-2025-27774","description":"An insufficiently secured internal function allows session generation for arbitrary users. The decodeParam function checks the JWT but does not verify which signing algorithm was used. As a result, an attacker can use the \"ex:action\" parameter in the VerifyUserByThrustedService function to generate a session for any user.","status":"published","published":"2025-08-27T10:25:20Z","modified":"2025-08-27T13:25:58Z","cvss":[{"version":"4.0","score":8.8,"vector":"CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","level":"high"}],"updated_at":"2026-11-02T20:31:52.106571Z"}],"ghsa":[{"id":"GHSA-qhgj-gg86-h6q2","title":"An insufficiently secured internal function allows session generation for arbitrary users. The...","description":"An insufficiently secured internal function allows session generation for arbitrary users. The decodeParam function checks the JWT but does not verify which signing algorithm was used. As a result, an attacker can use the \"ex:action\" parameter in the VerifyUserByThrustedService function to generate a session for any user.","status":"published","published":"2025-08-27T12:30:27Z","modified":"2025-08-27T12:30:37Z","cvss":[{"version":"4.0","score":8.8,"vector":"CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"}],"cwes":["CWE-347"],"updated_at":"2026-11-02T15:03:24.943278Z"}],"nvd":[{"id":"CVE-2025-30064","description":"An insufficiently secured internal function allows session generation for arbitrary users. The decodeParam function checks the JWT but does not verify which signing algorithm was used. As a result, an attacker can use the \"ex:action\" parameter in the VerifyUserByThrustedService function to generate a session for any user.","status":"published","published":"2025-08-27T11:15:41.627Z","modified":"2026-06-17T09:08:06.66Z","cvss":[{"version":"4.0","score":8.8,"vector":"CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"}],"cwes":["CWE-347","CWE-912"],"updated_at":"2026-11-02T14:11:25.826804Z"}]}}