CVE-2026-35095
Session fixation in KTM System e-BOK
- State
- Published
- Severity
- 4.8 Medium
- Published
- Jun 30, 2026
- Updated
- Jun 30, 2026
- Reserved
- Apr 1, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 4.8 Medium | 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 | CERT-PL |
Weaknesses
- CWE-384 Session Fixation
Affected Products
| Product | Versions |
|---|---|
e-BOKKTM System |
|
References
- https://cert.pl/posts/2026/06/CVE-2026-35095/third-party-advisory
- https://ktmsystem.pl/internetowe-biuro-obslugi-klienta/product
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