9router /v1 APIs has unauthenticated access via reverse proxy locality collapse

[ Description ]Official description

9Router is an AI router & token saver. Prior to 0.5.2, 9router treats loopback requests as trusted and allows /v1/* access without an API key, so a same-host reverse proxy that forwards public traffic to the backend through 127.0.0.1 causes src/dashboardGuard.js to misclassify external requests as local. A remote unauthenticated attacker can access /v1 APIs such as /v1/models and may abuse configured upstream provider credentials through /v1 proxy endpoints depending on enabled providers. This issue is fixed in version 0.5.2.

[ Fixes ]Fixes and patches

• 9router 0.5.2Fixed version · GitHub Advisories · npm package 9router: upgrade to 0.5.2 or later (affected <= 0.4.80)

[ Packages ]Affected open-source packages

• 9router npmAffected <= 0.4.80 · fixed in 0.5.2 · GHSA-x5c9-v98j-722r

[ References ]References

• github.com/decolua/9router/security/advisories/GHSA-x5c9-v98j-722rx_refsource_CONFIRM
• github.com/decolua/9router/commit/da667836cc7584bea0edd893de1d590c9ea279dcx_refsource_MISC
• github.com/decolua/9router/releases/tag/v0.5.2x_refsource_MISC