NousResearch hermes-agent disabled_toolsets agent_init.py get_tool_definitions privileges assignment

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-18976
StatePUBLISHED
AssignerVulDB
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-06 02:16:41 UTC
Updated2026-08-12 21:00:37 UTC
DescriptionA 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.

Risk And Classification

Primary CVSS: v4.0 2.1 LOW from [email protected]

CVSS:4.0/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

EPSS: 0.002090000 probability, percentile 0.113160000 (date 2026-08-14)

Problem Types: CWE-266 | CWE-266 Incorrect Privilege Assignment

VersionSourceTypeScoreSeverityVector
4.0[email protected]Secondary2.1LOWCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/C...
4.0CNADECLARED5.3MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
3.1[email protected]Secondary6.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
3.1CNADECLARED6.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
3.0CNADECLARED6.3MEDIUMCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
2.0[email protected]Secondary6.5AV:N/AC:L/Au:S/C:P/I:P/A:P
2.0CNADECLARED6.5AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:C

CVSS v4.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
Low
User Interaction
None
Confidentiality
Low
Integrity
Low
Availability
Low
Sub Conf.
None
Sub Integrity
None
Sub Availability
None

CVSS:4.0/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

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low

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

CVSS v3.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA NousResearch Hermes-agent affected 0.1 Not specified
CNA NousResearch Hermes-agent affected 0.2 Not specified
CNA NousResearch Hermes-agent affected 0.3 Not specified
CNA NousResearch Hermes-agent affected 0.4 Not specified
CNA NousResearch Hermes-agent affected 0.5 Not specified
CNA NousResearch Hermes-agent affected 0.6 Not specified
CNA NousResearch Hermes-agent affected 0.7 Not specified
CNA NousResearch Hermes-agent affected 0.8 Not specified
CNA NousResearch Hermes-agent affected 0.9 Not specified
CNA NousResearch Hermes-agent affected 0.10 Not specified
CNA NousResearch Hermes-agent affected 0.11 Not specified
CNA NousResearch Hermes-agent affected 0.12 Not specified
CNA NousResearch Hermes-agent affected 0.13 Not specified
CNA NousResearch Hermes-agent affected 0.14 Not specified
CNA NousResearch Hermes-agent affected 0.15 Not specified
CNA NousResearch Hermes-agent affected 0.16.0 Not specified

References

ReferenceSourceLinkTags
github.com/NousResearch/hermes-agent [email protected] github.com
github.com/NousResearch/hermes-agent/pull/46185 [email protected] github.com
vuldb.com/vuln/386264/cti [email protected] vuldb.com
vuldb.com/cve/CVE-2026-18976 [email protected] vuldb.com
github.com/NousResearch/hermes-agent/issues/46171 [email protected] github.com
vuldb.com/submit/862541 [email protected] vuldb.com
vuldb.com/vuln/386264 [email protected] vuldb.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Erichen-apple (VulDB User) (en)

CNA: VulDB CNA Team (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-08-05T00:00:00.000ZAdvisory disclosed
CNA2026-08-05T02:00:00.000ZVulDB entry created
CNA2026-08-05T18:22:48.000ZVulDB entry last update

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