CVE-2026-78616 Dimension Stored XSS via Trusted CA Certificate Configuration
An authenticated administrator can execute arbitrary JavaScript in another administrator's browser via a crafted Trusted CA certificate in WatchGuard Dimension.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-78616?
CVE-2026-78616 is a medium-severity cross-site scripting vulnerability in WatchGuard Dimension, published on 27 Aug 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
A Stored Cross-Site Scripting (XSS) vulnerability in WatchGuard Dimension's Trusted CA certificate configuration allows an authenticated administrator to execute arbitrary JavaScript in another authenticated administrator's web browser by saving a carefully crafted certificate.
Weakness: CWE-79
Which versions are affected by CVE-2026-78616?
How do I fix CVE-2026-78616?
No fix has been published for CVE-2026-78616 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-2026-78616 being exploited?
There is no known exploitation of CVE-2026-78616 in the wild and no public exploit code.
Sources
Also known as GHSA-mv85-7f73-2rv3.