CVE-2026-18976 (CVSS 6.3)

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.

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CVSS v3.1 Score

6.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Weakness Type (CWE)

CWE-266 CWE-266

References

Other References

https://github.com/NousResearch/hermes-agent/ https://github.com/NousResearch/hermes-agent/issues/46171 https://github.com/NousResearch/hermes-agent/pull/46185 https://vuldb.com/cve/CVE-2026-18976 https://vuldb.com/submit/862541 https://vuldb.com/vuln/386264 https://vuldb.com/vuln/386264/cti

Frequently Asked Questions

What is CVE-2026-18976? +

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. It has a CVSS v3.1 base score of 6.3 (MEDIUM).

How severe is CVE-2026-18976? +

CVE-2026-18976 has a CVSS v3.1 score of 6.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

How do I check if I'm vulnerable to CVE-2026-18976? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2026-18976