CVE-2026-18976
NousResearch hermes-agent disabled_toolsets agent_init.py get_tool_definitions privileges assignment
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.
INFO
Published Date :
Aug. 6, 2026, 2:16 a.m.
Last Modified :
Aug. 6, 2026, 2:16 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 4.0 | LOW | [email protected] |
Solution
- Update hermes-agent to version 0.16.1 or later.
- Apply vendor security patches when available.
- Review privilege assignments for affected components.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-18976.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-18976 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-18976
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-18976 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-18976 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by [email protected]
Aug. 06, 2026
Action Type Old Value New Value Added Affected [{'cpes': ['cpe:2.3:a:nousresearch:hermes-agent:*:*:*:*:*:*:*:*'], 'vendor': 'NousResearch', 'modules': ['disabled_toolsets Handler'], 'product': 'hermes-agent', 'versions': [{'status': 'affected', 'version': '0.1'}, {'status': 'affected', 'version': '0.2'}, {'status': 'affected', 'version': '0.3'}, {'status': 'affected', 'version': '0.4'}, {'status': 'affected', 'version': '0.5'}, {'status': 'affected', 'version': '0.6'}, {'status': 'affected', 'version': '0.7'}, {'status': 'affected', 'version': '0.8'}, {'status': 'affected', 'version': '0.9'}, {'status': 'affected', 'version': '0.10'}, {'status': 'affected', 'version': '0.11'}, {'status': 'affected', 'version': '0.12'}, {'status': 'affected', 'version': '0.13'}, {'status': 'affected', 'version': '0.14'}, {'status': 'affected', 'version': '0.15'}, {'status': 'affected', 'version': '0.16.0'}]}] Added 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. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L Added CVSS V2 (AV:N/AC:L/Au:S/C:P/I:P/A:P) Added CWE CWE-266 Added Reference https://github.com/NousResearch/hermes-agent/ Added Reference https://github.com/NousResearch/hermes-agent/issues/46171 Added Reference https://github.com/NousResearch/hermes-agent/pull/46185 Added Reference https://vuldb.com/cve/CVE-2026-18976 Added Reference https://vuldb.com/submit/862541 Added Reference https://vuldb.com/vuln/386264 Added Reference https://vuldb.com/vuln/386264/cti