CVE-2026-18993: NousResearch hermes-agent Memory Toolset model_tools.py access control

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 detected in NousResearch hermes-agent up to 0.16.0. Affected by this issue is some unknown functionality of the file hermes-agent/model_tools.py of the component Memory Toolset. The manipulation results in improper access controls. The attack can be executed remotely. The exploit is now public and may be used.

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/issues/48181
https://github.com/NousResearch/hermes-agent/pull/46185
https://vuldb.com/cve/CVE-2026-18993
https://vuldb.com/submit/862610
https://vuldb.com/vuln/386377
https://vuldb.com/vuln/386377/cti

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