CVE-2022-39295 Improper Neutralization of Alternate XSS Syntax in Knowage-Server

Medium 6.1 Published 13 Oct 2022 Updated 22 Apr 2025

An attacker can execute arbitrary scripts in the Knowage business analytics server by bypassing XSS filters, potentially leading to session hijacking or data theft.

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-2022-39295?

CVE-2022-39295 is a medium-severity cross-site scripting vulnerability in KnowageLabs Knowage-Server, published on 13 Oct 2022. 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

Knowage is an open source suite for modern business analytics alternative over big data systems. KnowageLabs / Knowage-Server starting with the 6.x branch and prior to versions 7.4.22, 8.0.9, and 8.1.0 is vulnerable to cross-site scripting because the `XSSRequestWrapper::stripXSS` method can be bypassed. Versions 7.4.22, 8.0.9, and 8.1.0 contain patches for this issue. There are no known workarounds.

Weakness: CWE-87, CWE-79

Which versions are affected by CVE-2022-39295?

It affects 1 product.

Products include Eng Knowage.

How do I fix CVE-2022-39295?

No fix has been published for CVE-2022-39295 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-2022-39295 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-39295 exists.

Sources

Also known as GHSA-f2gr-6h9j-rwcw.