Medium severity · published Aug 27, 2026
CVE-2026-78616
Dimension Stored XSS via Trusted CA Certificate Configuration
4.8
CVSS
0.3%
EPSS
No
On KEV
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 23% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DI
Dimension · WatchGuard
2.0 before 2.3.1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-78616
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-78616
psirt.watchguard.com
https://psirt.watchguard.com/CVE-2026-78616
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