CVE-2022-35739 Cross-site scripting in n/a

Medium 5.3 Published 25 Oct 2022 Updated 7 May 2025

Attackers can inject malicious CSS into device icons, potentially leading to data exposure or security bypasses, though not full code execution.

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

What is CVE-2022-35739?

CVE-2022-35739 is a medium-severity cross-site scripting vulnerability in n/a, published on 25 Oct 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

PRTG Network Monitor through 22.2.77.2204 does not prevent custom input for a device’s icon, which can be modified to insert arbitrary content into the style tag for that device. When the device page loads, the arbitrary Cascading Style Sheets (CSS) data is inserted into the style tag, loading malicious content. Due to PRTG Network Monitor preventing “characters, and from modern browsers disabling JavaScript support in style tags, this vulnerability could not be escalated into a Cross-Site Scripting vulnerability.

Weakness: CWE-79

Which versions are affected by CVE-2022-35739?

It affects 1 product.

Products include Paessler Prtg Network Monitor.

How do I fix CVE-2022-35739?

No fix has been published for CVE-2022-35739 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-2022-35739 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-35739 exists.

Sources

Also known as GHSA-c65j-wcvh-77gc.