---
id: "CVE-2026-114463"
kind: "vulnerability"
aliases: ["CVE-2026-114463"]
title: "Hermes Agent: webhook route names with colons escalate toolset privileges"
severity: "unknown"
cvss: null
epss: 0.00366
exploited: false
status: "open"
category: "ai-tooling"
products: []
ecosystems: []
tags: ["ai-tooling", "hermes-agent", "nous-research", "self-hosted", "webhooks"]
not_affected_if: ["single-route-config", "webhook-gateway-disabled"]
published_at: "2026-10-21T16:17:34+00:00"
first_seen_at: "2026-10-23T21:57:29+00:00"
updated_at: "2026-10-25T05:02:04+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-114463", "first_seen_at": "2026-10-23T21:57:29+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-114463", "first_seen_at": "2026-10-24T13:15:54+00:00"}]
---

# Hermes Agent: webhook route names with colons escalate toolset privileges

Hermes Agent's webhook gateway builds session IDs from the route name and delivery ID, then re-derives the authorizing route by splitting that string on colons. A route name containing a colon can be matched to a different, higher-privileged route, so a remote attacker holding the target's HMAC secret can gain that route's toolsets.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- unknown

## Fix

- unknown

## Timeline

- 2026-10-23T21:57:29+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-114463
- 2026-10-24T13:15:54+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2026-114463

## From the sources

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.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_