9router: Kiro region injection allows authenticated SSRF with Authorization header forwarding

[ Why it matters ]Priority signals

• Public proof-of-concept exploit exists (CISA SSVC)

[ Description ]Official description

9Router is an AI router & token saver. Prior to 0.5.6, the Kiro API-key validation endpoint POST /api/oauth/kiro/api-key builds an upstream URL using a user-controlled region value, allowing an authenticated attacker to supply a crafted region such as kiro-canary.local:8443# and cause 9Router to send the Kiro validation request to an attacker-controlled host while forwarding the submitted Kiro API key as an Authorization header. This issue is fixed in version 0.5.6.

[ Fixes ]Fixes and patches

• 9router 0.5.6Fixed version · GitHub Advisories · npm package 9router: upgrade to 0.5.6 or later (affected <= 0.5.2)

[ Packages ]Affected open-source packages

• 9router npmAffected <= 0.5.2 · fixed in 0.5.6 · GHSA-6mwv-4mrm-5p3m

[ References ]References

• github.com/decolua/9router/security/advisories/GHSA-6mwv-4mrm-5p3mx_refsource_CONFIRM
• github.com/decolua/9router/commit/126aa244c5b51b74ab8c7594e3418fcf4437bf6fx_refsource_MISC
• github.com/decolua/9router/releases/tag/v0.5.6x_refsource_MISC