CVE-2025-26842 Missing authorization in n/a
Users with CommunicationLog access can view S/MIME encrypted email content in Znuny tickets they are not authorized to access.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-26842?
CVE-2025-26842 is a high-severity missing authorization vulnerability in n/a, published on 8 May 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An issue was discovered in Znuny through 7.1.3. If access to a ticket is not given, the content of S/MIME encrypted e-mail messages is visible to users with access to the CommunicationLog.
Weakness: CWE-863
Which versions are affected by CVE-2025-26842?
It affects 1 product.
Products include Znuny Znuny.
How do I fix CVE-2025-26842?
Apply the vendor's patch.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2025-26842 being exploited?
There is no known exploitation of CVE-2025-26842 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as DEBIAN-CVE-2025-26842, GHSA-c2x5-mpj8-v9v9, UBUNTU-CVE-2025-26842.