CVE-2026-114463
highThe webhook platform gateway in Nous Research Hermes Agent versions builds the session chat_id as webhook:{route_name}:{delivery_id} and re-derives the authori…
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.
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/NousResearch/hermes-agent/pull/115285 cret@cert.org
- https://github.com/NousResearch/hermes-agent/releases/tag/v0.22.2 cret@cert.org
- https://github.com/pinarsadioglu/security-advisories/blob/main/webhook-route-authz-bypass.... cret@cert.org
- https://github.com/pinarsadioglu/security-advisories/blob/main/webhook-route-authz-bypass.... 134c704f-9b21-4f2e-91b3-4a467353bcc0