Vulnerability · Published Oct 21, 2026 · Assigned by certcc

CVE-2026-114463CVE-2026-114463

High 7.5

In plain English

A high-severity incorrect authorization in Hermes Agent from Nous Research. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 53% of all known vulnerabilities).

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)0.7%top 47.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
Nous Research	Hermes Agent	0 – through 2026.8.19

Weakness: CWE-863 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

In plain English

Official description

Affected products (as reported)

References