CVE-2026-9366

HIGH

NousResearch hermes-agent prompt_builder.py _scan_context_content injection

Title source: cna

Description

A vulnerability was found in NousResearch hermes-agent 2026.4.23. The impacted element is the function _scan_context_content of the file agent/prompt_builder.py. The manipulation results in injection. The attack may be performed from remote. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.

References (4)

Core 4

Core References

Vdb Entry, Technical Description vdb-entry technical-description

VDB-365329 | NousResearch hermes-agent prompt_builder.py _scan_context_content injection

https://vuldb.com/vuln/365329

Signature, Permissions Required signature permissions-required

VDB-365329 | CTI Indicators (IOB, IOC, TTP, IOA)

https://vuldb.com/vuln/365329/cti

Third Party Advisory third-party-advisory

Submit #812227 | NousResearch hermes-agent 2026.4.23 Injection (CWE-74)

https://vuldb.com/submit/812227

Exploit exploit

https://gist.github.com/YLChen-007/581fd92de5548fbaacb2092e848a75cc

Scores

CVSS v3 7.3

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

Details

CWE

CWE-707 CWE-74

Status published

Products (1)

NousResearch/hermes-agent 2026.4.23

Published May 24, 2026

Tracked Since May 24, 2026