CVE-2025-66359 Cross-site scripting in SIEM

High 8.5 Published 27 Nov 2025 Updated 28 Nov 2025

Attackers can inject malicious scripts into the Logpoint SIEM interface, potentially stealing user sessions or executing code in victim browsers.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2025-66359?

CVE-2025-66359 is a high-severity cross-site scripting vulnerability in Logpoint SIEM, published on 27 Nov 2025. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

An issue was discovered in Logpoint before 7.7.0. Insufficient input validation and a lack of output escaping in multiple components leads to a cross-site scripting (XSS) vulnerability.

Weakness: CWE-79

Which versions are affected by CVE-2025-66359?

It affects 1 product.

Products include Logpoint Siem.

How do I fix CVE-2025-66359?

No fix has been published for CVE-2025-66359 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-2025-66359 being exploited?

There is no known exploitation of CVE-2025-66359 in the wild and no public exploit code.

Sources

Also known as GHSA-wfv3-vv9v-vvmq.