CVE-2023-34088 Collabora Online has Stored Cross-Site-Scripting vulnerability in admin interface

What is CVE-2023-34088?

CVE-2023-34088 is a high-severity cross-site scripting vulnerability in CollaboraOnline online, published on 31 May 2023. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

Collabora Online is a collaborative online office suite. A stored cross-site scripting (XSS) vulnerability was found in Collabora Online prior to versions 22.05.13, 21.11.9.1, and 6.4.27. An attacker could create a document with an XSS payload as a document name. Later, 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. The administrator JSON web token (JWT) used for the websocket connection could be leaked through this flaw. Users should upgrade to Collabora Online 22.05.13 or higher; Collabora Online 21.11.9.1 or higher; Collabora Online 6.4.27 or higher to receive a patch.

Weakness: CWE-79

Which versions are affected by CVE-2023-34088?

It affects 1 product.

Products include Collaboraoffice Collabora Online.

How do I fix CVE-2023-34088?

No fix has been published for CVE-2023-34088 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2023-34088 being exploited?

There is no known exploitation of CVE-2023-34088 in the wild and no public exploit code.

Other vulnerabilities in CollaboraOnline online

• CVE-2023-48314 Unescaped passing of the request URL in Collabora Online High 7.1
• CVE-2024-29182 Collabora Online Stored Cross-Site-Scripting vulnerability via tooltip Medium 6.1

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-7582-pwfh-3pwr.