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CVE-2026-18976: Incorrect Privilege Assignment in NousResearch hermes-agent

0
Medium
VulnerabilityCVE-2026-18976cvecve-2026-18976
Published: 08/06/2026 (08/06/2026, 01:45:12 UTC)
Source: CVE Database V5
Vendor/Project: NousResearch
Product: hermes-agent

Description

CVE-2026-18976 is a medium severity vulnerability in NousResearch hermes-agent up to version 0.16.0. It involves incorrect privilege assignment in the get_tool_definitions function within the disabled_toolsets Handler. The vulnerability can be exploited remotely and has been publicly disclosed. No official patch or remediation has been confirmed yet.

CVSS v4.0

Score 5.3medium

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
Low
User Interaction
None
Vuln. Confidentiality
Low
Vuln. Integrity
Low
Vuln. Availability
Low
Subsq. Confidentiality
None
Subsq. Integrity
None
Subsq. Availability
None
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

Affected software

hermes-agent
pkg:pypi/hermes-agent
Affected versions
=0.1=0.2=0.3=0.4=0.5=0.6=0.7=0.8=0.9=0.10=0.11=0.12=0.13=0.14=0.15=0.16.0
CPE configurations
cpe:2.3:a:nousresearch:hermes-agent:*:*:*:*:*:*:*:*

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AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 08/06/2026, 02:32:30 UTC

Technical Analysis

This vulnerability affects the NousResearch hermes-agent software versions 0.1 through 0.16.0. It is caused by incorrect privilege assignment in the get_tool_definitions function of the agent/agent_init.py file, specifically in the disabled_toolsets Handler component. The flaw allows an attacker to manipulate privileges remotely. The issue was reported early to the project and has been publicly disclosed. The CVSS 4.0 base score is 5.3, indicating medium severity, with network attack vector, low attack complexity, no user interaction required, and limited impact on confidentiality, integrity, and availability. No official fix or patch has been documented in the provided data.

Potential Impact

The vulnerability allows remote attackers to gain incorrect privileges within the affected component, potentially enabling unauthorized actions. The impact is rated medium severity with limited confidentiality, integrity, and availability impact. There is no evidence of known exploits in the wild at this time.

Mitigation Recommendations

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or patch is documented, users should monitor the vendor's communications for updates. Until a patch is available, consider restricting network access to the affected service to trusted sources if feasible.

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Technical Details

Data Version
5.2
Assigner Short Name
VulDB
Date Reserved
2026-08-05T16:17:43.809Z
Cvss Version
4.0
State
PUBLISHED
Remediation Level
null

Threat ID: 6a73ed68bf8831d539f7b275

Added to database: 08/06/2026, 02:11:52 UTC

Last enriched: 08/06/2026, 02:32:30 UTC

Last updated: 08/06/2026, 03:00:15 UTC

Views: 5

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