Vulnerability 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. This issue was fixed in the patch published in June 2026.
Related Weaknesses (CWE)
References
- https://cert.pl/posts/2026/06/CVE-2026-35095/
- https://ktmsystem.pl/internetowe-biuro-obslugi-klienta/
FAQ
What is CVE-2026-35095?
CVE-2026-35095 is a documented vulnerability. 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...
How severe is CVE-2026-35095?
CVSS scoring is not yet available for CVE-2026-35095. Check NVD for updates.
Is there a patch for CVE-2026-35095?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.