9router has an Incomplete Fix: Local-Only Access Gate Bypass in 9router via Host Header SpoofING

Date Jul 2, 2026
Type Vendor advisory
Signal High-risk advisory
Vendor / Product npm ยท 9router
CVE CVE-2026-49353
High-risk advisory CVE-2026-49353

Summary

9router has an Incomplete Fix: Local-Only Access Gate Bypass in 9router via Host Header SpoofING

Why it matters

GitHub has published a reviewed security advisory for 9router. Prioritize it with other application dependency updates.

Operator check

Check whether 9router is present in application dependency manifests, lockfiles, or build images. Review the GitHub advisory and upgrade to a patched version where available.

Sources

PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.