CVE-2026-9507

Description

A session fixation vulnerability has been identified in osTicket v1.18.2. This security flaw allows an attacker to hijack a victim’s account by keeping the initial session identifier (OSTSESSID) active after a successful login. The issue lies in the fact that the application does not invalidate the pre-authentication cookie or generate a new identifier for the authenticated context. As a result, if an attacker manages to set a known session identifier in the victim’s browser, they will be able to maintain unauthorised access to the account once the victim has authenticated.

References

https://www.incibe.es/en/incibe-cert/notices/aviso/session-fixation-vulnerability-enhancesofts-osticket

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3

CVSS v4