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CVE-2026-9366

NousResearch hermes-agent prompt_builder.py _scan_context_content injection

Published: May 24, 2026Updated: May 26, 2026 Sources: CVE List NVDCWE-74
NVD MITRE
7.3CVSSHIGH
EPSS Score
0.4%
Top 69.6%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:LI:LA:L
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:LAvailability
Low
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Weaknesses

CWE-74CWE-707

Affected Products

hermes-agentNousResearch
Mixed
AI / ML / ai-agent-tooling
nousresearchcommercialAI / MLaka nousresearch, hermes-agent

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

2 techniques
Execution
Initial Access
View detailed technique mapping

References

https://vuldb.com/vuln/365329
vuldb.com
https://vuldb.com/vuln/365329/cti
vuldb.com
https://vuldb.com/submit/812227
vuldb.com
and 1 more references View all →

Timeline

Published
May 24, 2026
Last Updated
May 26, 2026

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