CVE-2025-56526 Cross-site scripting in n/a

Medium 6.1 Published 18 Nov 2025 Updated 19 Nov 2025

Attackers can execute arbitrary code via crafted PDFs in Kotaemon, posing a risk to users interacting with malicious documents.

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

What is CVE-2025-56526?

CVE-2025-56526 is a medium-severity cross-site scripting vulnerability in n/a, published on 18 Nov 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Cross site scripting (XSS) vulnerability in Kotaemon 0.11.0 allowing attackers to execute arbitrary code via a crafted PDF.

Weakness: CWE-79

Which versions are affected by CVE-2025-56526?

It affects 1 product.

Products include Cinnamon Kotaemon.

How do I fix CVE-2025-56526?

No fix has been published for CVE-2025-56526 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-2025-56526 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-56526 exists.

Public exploit code: 1 proofs of concept on GitHub.

Sources

Also known as GHSA-vfwg-j93f-wfr4.