CVE-2025-45055 Cross-site scripting in n/a

Medium 5.4 Published 9 Jun 2025 Updated 9 Jun 2025

Authenticated users can inject JavaScript via malicious SVG attachments in Silverpeas, allowing privilege escalation to administrator.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2025-45055?

CVE-2025-45055 is a medium-severity cross-site scripting vulnerability in n/a, published on 9 Jun 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

Silverpeas 6.4.2 contains a stored cross-site scripting (XSS) vulnerability in the event management module. An authenticated user can upload a malicious SVG file as an event attachment, which, when viewed by an administrator, executes embedded JavaScript in the admin's session. This allows attackers to escalate privileges by creating a new administrator account. The vulnerability arises from insufficient sanitization of SVG files and weak CSRF protections.

Weakness: CWE-79

Which versions are affected by CVE-2025-45055?

It affects 1 product.

Products include Silverpeas Silverpeas.

How do I fix CVE-2025-45055?

No fix has been published for CVE-2025-45055 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-2025-45055 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-45055 exists.

Sources

Also known as GHSA-4377-g9q2-3wh5.