What’s Vulnerable › Vulnerabilities

CVE-2026-18976: NousResearch hermes-agent disabled_toolsets agent_init.py get_tool_definitions privileges assignment

• Severity: medium (CVSS 6.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-06 · updated 2026-10-23
• Weakness: CWE-266

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.

Affected products

• NousResearch hermes-agent: 0.1, 0.2, 0.3, 0.4, 0.5, 0.6 (+10)

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

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