Description
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in WatchGuard Fireware OS spamBlocker module allows Stored XSS. This vulnerability is an additional unmitigated attack path for CVE-2025-1071.
This issue affects Fireware OS 12.0 up to and including 12.12, 12.5 up to and including 12.5.18, and 2025.1 up to and including 2026.2.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| WatchGuard | Fireware OS | 2025.1 – < 2026.2.1, 12.0 – < 12.12.1, 12.0 – < 12.11.9, 12.0 – < 12.5.19 | 2026.2.1 |
Advisories 1
- WID-SEC-2026-2193 WatchGuard Firebox: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jul 2, 2026
References
- https://psirt.watchguard.com/CVE-2026-13376 vendor-advisory
- https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00018 vendor-advisory