{"id":"CVE-2026-35095","aliases":["EUVD-2026-40322","GHSA-7vjj-gwc4-wgq7"],"status":"published","title":"Session fixation in KTM System e-BOK","description":"KTM System e-BOK allows the session identifier to be set by the client prior to authentication. If a cookie with a valid name is set, its value remains unchanged after successful login. This behaviour enables an attacker to fix a session ID for a victim and later hijack the authenticated session.\n\nThis issue was fixed in the patch published in June 2026.","severity":{"version":"4.0","score":4.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00211,"percentile":0.11418,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-384"],"published":"2026-06-30T13:37:55Z","modified":"2026-10-25T21:10:00Z","products":[{"vendor":"ktm system","product":"e-bok"}],"references":[{"url":"https://cert.pl/posts/2026/06/CVE-2026-35095/","tags":["third-party-advisory"]},{"url":"https://ktmsystem.pl/internetowe-biuro-obslugi-klienta/","tags":["product"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-35095"},{"url":"https://cert.pl/posts/2026/06/CVE-2026-35095"},{"url":"https://ktmsystem.pl/internetowe-biuro-obslugi-klienta"},{"url":"https://github.com/advisories/GHSA-7vjj-gwc4-wgq7"}],"sources":{"cve":[{"id":"CVE-2026-35095","title":"Session fixation in KTM System e-BOK","description":"KTM System e-BOK allows the session identifier to be set by the client prior to authentication. If a cookie with a valid name is set, its value remains unchanged after successful login. This behaviour enables an attacker to fix a session ID for a victim and later hijack the authenticated session.\n\nThis issue was fixed in the patch published in June 2026.","status":"published","published":"2026-06-30T13:37:55.256Z","modified":"2026-06-30T14:42:45.383Z","cvss":[{"version":"4.0","score":4.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","level":"medium","assessor":"cna"}],"cwes":["CWE-384"],"updated_at":"2026-11-02T14:20:05.505362Z"}],"euvd":[{"id":"EUVD-2026-40322","description":"KTM System e-BOK allows the session identifier to be set by the client prior to authentication. If a cookie with a valid name is set, its value remains unchanged after successful login. This behaviour enables an attacker to fix a session ID for a victim and later hijack the authenticated session.\n\nThis issue was fixed in the patch published in June 2026.","status":"published","published":"2026-06-30T13:37:55Z","modified":"2026-06-30T14:42:45Z","cvss":[{"version":"4.0","score":4.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T18:20:21.627235Z"}],"ghsa":[{"id":"GHSA-7vjj-gwc4-wgq7","title":"KTM System e-BOK allows the session identifier to be set by the client prior to authentication....","description":"KTM System e-BOK allows the session identifier to be set by the client prior to authentication. If a cookie with a valid name is set, its value remains unchanged after successful login. This behaviour enables an attacker to fix a session ID for a victim and later hijack the authenticated session.\n\nThis issue was fixed in the patch published in June 2026.","status":"published","published":"2026-06-30T15:30:46Z","modified":"2026-06-30T15:30:56Z","cvss":[{"version":"4.0","score":4.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/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":"medium"}],"cwes":["CWE-384"],"updated_at":"2026-11-02T15:09:05.934873Z"}],"nvd":[{"id":"CVE-2026-35095","description":"KTM System e-BOK allows the session identifier to be set by the client prior to authentication. If a cookie with a valid name is set, its value remains unchanged after successful login. This behaviour enables an attacker to fix a session ID for a victim and later hijack the authenticated session.\n\nThis issue was fixed in the patch published in June 2026.","status":"published","published":"2026-06-30T14:16:26.283Z","modified":"2026-10-25T21:10:00.77Z","cvss":[{"version":"4.0","score":4.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/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":"medium","assessor":"secondary"}],"cwes":["CWE-384"],"updated_at":"2026-11-02T14:12:26.508751Z"}]}}