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 additi…

Medium CVSS 4.8

CVECVE-2026-13377

First seen2026-08-10 22:15 UTC

Disclosed2026-07-03 00:16 UTC

Last updated2026-08-10 22:15 UTC

Channel statusauto

Summary

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.

In-depth triage

No in-depth report has been generated yet (DR-003 v2 AI pipeline is under construction).

Affected products

Sources

NVD DATABASE

Original Links

https://psirt.watchguard.com/CVE-2026-13377
https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00019 Vendor Advisory

Timeline

2026-08-10 nvd_ingest NVD