جزئیات آسیب‌پذیری

The webhook platform gateway in Nous Research Hermes Agent versions builds the session chat_id as webhook:{route_name}:{delivery_id} and re-derives the authorizing route by splitting that string, so a route name containing a ":" resolves toolset authorization to a different, higher-privileged prefix route than the one authenticated, which allows a remote attacker with the target HMAC to gain that higher-privileged route's toolsets.

• https://github.com/NousResearch/hermes-agent/pull/115285
• https://github.com/NousResearch/hermes-agent/releases/tag/v0.22.2
• https://github.com/pinarsadioglu/security-advisories/blob/main/webhook-route-authz-bypass.md