Vulnerability · Published Sep 3, 2026 · Assigned by VulDB

CVE-2026-85105NousResearch hermes-agent Session Management s71.py _sess_nowait authorization

High 7.3

In plain English

A high-severity authorization bypass via user-controlled key in hermes-agent from NousResearch. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 43% of all known vulnerabilities).

Severity (CVSS 3.1)7.3High

Exploit odds (30 days)0.5%top 57.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

A flaw has been found in NousResearch hermes-agent 0.18.0. Affected by this issue is the function _sess_nowait of the file s71.py of the component Session Management. This manipulation of the argument session_id causes authorization bypass. The attack can be initiated remotely. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products (as reported)

Vendor	Product	Versions
NousResearch	hermes-agent	0.18.0

Weakness: CWE-639, CWE-285 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:X

References

VDB-398312 | NousResearch hermes-agent Session Management s71.py _sess_nowait authorization vdb-entry, technical-description
VDB-398312 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
CVE-2026-85105 | CVE Analysis and Report third-party-advisory
Submit #885131 | NousResearch hermes-agent 0.18.0 Authorization Bypass Through User-Controlled Key third-party-advisory