CVE-2026-78616: Dimension Stored XSS via Trusted CA Certificate Configuration

Severity: medium (CVSS 4.8 v4.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-28 · updated 2026-08-28
Weakness: CWE-79

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.

Affected products

WatchGuard Dimension: from 2.0 before 2.3.1 — fixed in 2.3.1

How to fix

Upgrade to a fixed version: WatchGuard Dimension 2.3.1. Check the vendor advisory for mitigations.

References

https://psirt.watchguard.com/CVE-2026-78616

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