Quick answers
- Is CVE-2026-78616 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-78616 being exploited in the wild.
- How severe is CVE-2026-78616?
- Informational severity, with a CVSS score of 4.8, published 28 August 2026.
- Which products and versions are affected?
- Watchguard Dimension 2.0 to 2.3.0.
- Is there a fix for CVE-2026-78616?
- A patch was published on 2026-08-27: Version 2.3.1 released Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-78616 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-78616?
- Check whether you run Watchguard Dimension at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A Stored Cross-Site Scripting (CWE-79) vulnerability exists in WatchGuard Dimension's Trusted CA certificate configuration feature. An authenticated administrator can upload or save a specially crafted certificate containing malicious JavaScript that is not properly sanitized. When another authenticated administrator accesses the certificate configuration, the stored payload is executed in their browser context, allowing the attacker to perform administrative actions, steal session tokens, or modify system settings. The vulnerability requires authentication and user interaction (visiting the affected configuration page). WatchGuard released patch version 2.3.1 to address this issue.
Affected products
- WatchGuard Dimension 2.0 to 2.3.0
Timeline
- 2026-08-27: disclosed
- 2026-08-27: patched: Version 2.3.1 released