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.
Fix
Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.
Change history 4
- StatusDeferred → PublishedNVD modified 2026-10-30 15:16
- StatusPublished → DeferredNVD modified 2026-10-22 17:40
- StatusReceived → PublishedNVD modified 2026-10-21 15:03
- First seenunscoredNVD modified 2026-10-21 16:17
Affected (CPE criteria) 0
NVD has not attached CPE configurations yet.