CVE-2025-57539 Cross-site scripting in n/a
Authenticated users can inject malicious scripts into the U2F Origin field, leading to session hijacking when viewed by others.
- 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-2025-57539?
CVE-2025-57539 is a medium-severity cross-site scripting vulnerability in n/a, published on 9 Sep 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
A stored cross-site scripting (XSS) vulnerability in the U2F Origin field of the Datacenter configuration in Proxmox Virtual Environment (PVE) 8.4 allows authenticated users to store malicious input. The payload is rendered unsafely in the Web UI and executed when viewed by other users, potentially leading to session hijacking or other attacks.
Weakness: CWE-79
Which versions are affected by CVE-2025-57539?
It affects 1 product.
Products include Proxmox Virtual Environment.
How do I fix CVE-2025-57539?
No fix has been published for CVE-2025-57539 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-2025-57539 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-57539 exists.
Other vulnerabilities in n/a
Sources
Also known as GHSA-724h-r47v-7vvw.