Osticket

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.

Published: 2026-06-16T11:47:56.882Z
Updated: 2026-06-16T16:18:10.713Z

User enumeration vulnerability in /pwreset.php in osTicket v1.18.2 allows remote attackers to enumerate valid usernames registered in the platform.

Published: 2026-04-02T00:00:00.000Z
Updated: 2026-07-05T01:30:40.590Z

Enhancesoft osTicket versions 1.18.x prior to 1.18.3 and 1.17.x prior to 1.17.7 contain an arbitrary file read vulnerability in the ticket PDF export functionality. A remote attacker can submit a ticket containing crafted rich-text HTML that includes PHP filter expressions which are insufficiently sanitized before being processed by the mPDF PDF generator during export. When the attacker exports the ticket to PDF, the generated PDF can embed the contents of attacker-selected files from the server filesystem as bitmap images, allowing disclosure of sensitive local files in the context of the osTicket application user. This issue is exploitable in default configurations where guests may create tickets and access ticket status, or where self-registration is enabled.

Published: 2026-01-12T18:34:12.781Z
Updated: 2026-07-14T15:53:14.292Z

Cross Site Scripting vulnerability in the sanitize function in Enhancesoft osTicket 1.18.0 allows a remote attacker to escalate privileges via a crafted support ticket.

Published: 2024-02-20T00:00:00.000Z
Updated: 2024-08-06T16:35:06.103Z

Cross-site Scripting (XSS) - Stored in GitHub repository osticket/osticket prior to v1.16.6.

Published: 2023-03-10T00:00:00.000Z
Updated: 2025-02-27T19:00:08.276Z