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CVE-2026-18976

6.3 · MEDIUM

A vulnerability was determined in NousResearch hermes-agent up to 0.16.0.

Published Aug 6, 2026CWE-266EPSS 0.37%

Overview

CVE-2026-18976 is a medium-severity vulnerability. It was published on August 6, 2026 and has a CVSS 3.1 base score of 6.3 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.3, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

A vulnerability was determined in NousResearch hermes-agent up to 0.16.0. This impacts the function get_tool_definitions of the file agent/agent_init.py of the component disabled_toolsets Handler. This manipulation causes incorrect privilege assignment. The attack may be initiated remotely. The exploit has been publicly disclosed and may be utilized. The project was informed of the problem early through an issue report.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/NousResearch/hermes-agent/GitHubgithub.com/NousResearch/hermes-agent/issues/46171GitHubgithub.com/NousResearch/hermes-agent/pull/46185Refvuldb.com/cve/CVE-2026-18976Refvuldb.com/submit/862541Refvuldb.com/vuln/386264Refvuldb.com/vuln/386264/cti

How CyberStrike helps

Frequently asked questions

What is CVE-2026-18976?

CVE-2026-18976 is a medium-severity vulnerability. It was published on August 6, 2026 and has a CVSS 3.1 base score of 6.3 (MEDIUM).

How severe is CVE-2026-18976?

This vulnerability has a CVSS 3.1 base score of 6.3, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-18976?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-18976?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-18976 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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