Privilege escalation in Nousresearch Hermes-Agent
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.
EPSS: 0.002 (11.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
Affected products
- Nousresearch Hermes-agent — versions 0.1, 0.2, 0.3
Weakness classification (CWE)
References
- cna@vuldb.com (product)
- cna@vuldb.com (issue-tracking, exploit)
- cna@vuldb.com (issue-tracking, patch)
- cna@vuldb.com (third-party-advisory)
- cna@vuldb.com (third-party-advisory)
- cna@vuldb.com (technical-description, vdb-entry)
- cna@vuldb.com (signature, permissions-required)
Frequently asked questions
- What is CVE-2026-18976?
- CVE-2026-18976 is a medium-severity vulnerability in Nousresearch Hermes-Agent, classified under Incorrect Privilege Assignment. CVSS score: 6.3/10. Published 2026-08-06.
- How severe is CVE-2026-18976?
- Medium severity. CVSS v3 base score is 6.3 out of 10.