High 7.3Published May 24, 2026

CVE-2026-9366NousResearch hermes-agent prompt_builder.py _scan_context_content injection

Updated under an hour ago (Oct 25, 2026, 9:00 PM ET)

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Every CVE for NousResearch hermes-agent

Exploited in the last 30 days

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.

CVSS: 7.3 HIGH (v3.1, CNA)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
Weakness (CWE): CWE-74, CWE-707
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulDB
NVD analysis: Deferred
Record last updated: May 27, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

NousResearch hermes-agent nousresearch:hermes-agent	2026.4.23	CNA record

References

https://vuldb.com/vuln/365329vdb-entry, technical-description
https://vuldb.com/vuln/365329/ctisignature, permissions-required
https://vuldb.com/submit/812227third-party-advisory
https://gist.github.com/YLChen-007/581fd92de5548fbaacb2092e848a75ccexploit

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.