CVE-2026-35095

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.

CVSS

No CVSS.

References

Link	Resource
https://cert.pl/posts/2026/06/CVE-2026-35095/
https://ktmsystem.pl/internetowe-biuro-obslugi-klienta/

Configurations

No configuration.

History

25 Oct 2026, 21:10

Type	Values Removed	Values Added
Summary		(es) KTM System e-BOK permite que el identificador de sesión sea establecido por el cliente antes de la autenticación. Si se establece una cookie con un nombre válido, su valor permanece sin cambios después de un inicio de sesión exitoso. Este comportamiento permite a un atacante fijar un identificador de sesión para una víctima y posteriormente secuestrar la sesión autenticada. Este problema fue solucionado en el parche publicado en junio de 2026.

Information

Published : 2026-06-30 14:16

Updated : 2026-10-25 21:10

NVD link : CVE-2026-35095

Mitre link : CVE-2026-35095

CVE.ORG link : CVE-2026-35095

JSON object : View

Products Affected

No product.

CWE

CWE-384

Session Fixation

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