CVE-2025-43926 Cross-site scripting in n/a
Attackers can inject malicious scripts via custom AJAX calls to manipulate user preferences, potentially leading to code execution or privilege escalation in Znuny.
- 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
- Available
What is CVE-2025-43926?
CVE-2025-43926 is a medium-severity cross-site scripting vulnerability in n/a, published on 8 May 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
An issue was discovered in Znuny through 6.5.14 and 7.x through 7.1.6. Custom AJAX calls to the AgentPreferences UpdateAJAX subaction can be used to set user preferences with arbitrary keys. When fetching user data via GetUserData, these keys and values are retrieved and given as a whole to other function calls, which then might use these keys/values to affect permissions or other settings.
Weakness: CWE-79
Which versions are affected by CVE-2025-43926?
It affects 1 product.
Products include Znuny Znuny.
How do I fix CVE-2025-43926?
Upgrade to a fixed version.
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-2025-43926 being exploited?
There is no known exploitation of CVE-2025-43926 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as DEBIAN-CVE-2025-43926, GHSA-6mp7-r3w8-3vrm, UBUNTU-CVE-2025-43926.