CVE-2026-9507
Session fixation vulnerability in Enhancesoft's osTicket
- State
- Published
- Severity
- 5.1 Medium
- Published
- Jun 16, 2026
- Updated
- Jun 16, 2026
- Reserved
- May 25, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.1 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N | INCIBE |
Weaknesses
- CWE-38 Path traversal: '\absolute\pathname\here'
Affected Products
| Product | Versions |
|---|---|
osTicketEnhancesoft |
|
References
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