CVE-2026-114463

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.

EPSS

0.4% chance of exploitation in the next 30 days; higher than 30% of CVEs (scores of 2026-10-25)

Published

2026-10-21

Modified

2026-10-22

Record from

the NVD, synced 2026-10-23

References

• 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

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