medium4.8
CVE-2026-13376
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in WatchGuard Fireware OS spamBlocker module allows S…
Impact
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 versions |
|---|---|---|
| Watchguard | Fireware | from 12.0 before 12.12.1 from 2025.1 before 2026.2.1 from 12.5 through 12.5.18 |