CVE catalog
CVE-2026-13377
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in WatchGuard Fireware OS SIP Proxy module allows Stored XSS. This vulnerability is an additio
- Severity
- Medium · CVSS 4.8
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.27% · Oct 25, 2026
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in WatchGuard Fireware OS SIP Proxy module allows Stored XSS. This vulnerability is an additional unmitigated attack path for CVE-2025-6947.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Cpe | fireware | Not reported | 12.12.1 | fixed |
| Cpe | fireware | Not reported | 2026.2.1 | fixed |
| Cpe | fireware | Not reported | Not reported | unknown |
| Cpe | fireware | Not reported | Not reported | unknown |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Cpe | fireware | cpe | Not reported | 12.12.1 | Not reported | Not reported | Not reported |
| Cpe | fireware | cpe | Not reported | 2026.2.1 | Not reported | Not reported | Not reported |
OpenFactory catalog packages
No matching packages in this catalog.
Observed:
References
- [https://nvd.nist.gov/vuln/detail/CVE-2026-13377]
- [https://psirt.watchguard.com/CVE-2026-13377]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-2193.json]
- [https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00019]
[CERT-Bund public advisories] · [FIRST EPSS] · [National Vulnerability Database (NVD)]