Collabora · Collabora Online · CVE-2023-34088
**Name of the Vulnerable Software and Affected Versions**
Collabora Online versions prior to 22.05.13
Collabora Online versions prior to 21.11.9.1
Collabora Online versions prior to 6.4.27
**Description**
A stored cross-site scripting (XSS) issue was found in Collabora Online. An attacker could create a document with an XSS payload as a document name. If an administrator opened the admin console and navigated to the history page, the document name was injected as unescaped HTML and executed as a script inside the context of the admin console. This could lead to the leak of the administrator JSON web token (JWT) used for the websocket connection.
**Recommendations**
For Collabora Online versions prior to 22.05.13, upgrade to Collabora Online 22.05.13 or higher to receive a patch.
For Collabora Online versions prior to 21.11.9.1, upgrade to Collabora Online 21.11.9.1 or higher to receive a patch.
For Collabora Online versions prior to 6.4.27, upgrade to Collabora Online 6.4.27 or higher to receive a patch.