NousResearch hermes-agent up to 0.16.0 disabled_toolsets agent/agent_init.py get_tool_definitions privileges assignment

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.7$0-$5k1.19

Summaryinfo

A vulnerability was found in NousResearch hermes-agent up to 0.16.0 and classified as critical. Affected is the function get_tool_definitions of the file agent/agent_init.py of the component disabled_toolsets Handler. Such manipulation leads to privileges assignment. This vulnerability is traded as CVE-2026-18976. The attack may be launched remotely. Furthermore, there is an exploit available. The project was informed of the problem early through an issue report.

Detailsinfo

A vulnerability, which was classified as critical, has been found in NousResearch hermes-agent up to 0.16.0. Affected by this issue is the function get_tool_definitions of the file agent/agent_init.py of the component disabled_toolsets Handler. The manipulation with an unknown input leads to a privileges assignment vulnerability. Using CWE to declare the problem leads to CWE-266. A product incorrectly assigns a privilege to a particular actor, creating an unintended sphere of control for that actor. Impacted is confidentiality, integrity, and availability.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-18976. The exploitation is known to be easy. The attack may be launched remotely. Technical details as well as a public exploit are known. The MITRE ATT&CK project declares the attack technique as T1068.

The exploit is available at github.com. It is declared as proof-of-concept. The project was informed of the problem early through an issue report.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 5.7

VulDB Base Score: 6.3
VulDB Temp Score: 5.7
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Privileges assignment
CWE: CWE-266
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

08/05/2026 Advisory disclosed
08/05/2026 +0 days VulDB entry created
08/05/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 46171
Status: Not defined
Confirmation: 🔒

CVE: CVE-2026-18976 (🔒)
GCVE (CVE): GCVE-0-2026-18976
GCVE (VulDB): GCVE-100-386264
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 08/05/2026 18:22
Changes: 08/05/2026 18:22 (61)
Complete: 🔍
Submitter: Erichen-apple
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #862541: NousResearch Hermes Agent 0.16.0 Incorrect Privilege Assignment (CWE-266) (by Erichen-apple)

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