# CVE-2026-35095

## Summary

- **CVE ID:** CVE-2026-35095
- **Severity:** MEDIUM
- **CVSS Score:** 4.8 (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)
- **CWE:** CWE-384
- **Published:** Jun 30, 2026
- **Last Modified:** Jun 30, 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.

## Affected Products

- KTM System — e-BOK (0)

## References

- [CNA](https://cert.pl/posts/2026/06/CVE-2026-35095/)
- [CNA](https://ktmsystem.pl/internetowe-biuro-obslugi-klienta/)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.21%
- **EPSS Percentile:** 11.4

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._