CVE-2026-9366

HIGH 7.3

NousResearch hermes-agent prompt_builder.py _scan_context_content injection

CVSS Score

7.3

EPSS Score

0.0%

EPSS Percentile

14th

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.

CWE	CWE-74 CWE-707
Vendor	nousresearch
Product	hermes-agent
Published	May 24, 2026
Last Updated	May 27, 2026

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CVSS v3 Breakdown

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

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

NousResearch / hermes-agent

2026.4.23

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/365329 vuldb.com: https://vuldb.com/vuln/365329/cti vuldb.com: https://vuldb.com/submit/812227 gist.github.com: https://gist.github.com/YLChen-007/581fd92de5548fbaacb2092e848a75cc

Credits

🔍 Eric-i (VulDB User) VulDB CNA Team