CVE-2026-9366
NousResearch hermes-agent prompt_builder.py _scan_context_content injection
- State
- Published
- Severity
- 6.9 Medium
- Published
- May 24, 2026
- Updated
- May 27, 2026
- Reserved
- May 23, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.9 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P | VulDB |
| 3.1 | 7.3 High | 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 | VulDB |
| 3.0 | 7.3 High | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R | VulDB |
| 2.0 | 7.5 High | AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:ND/RC:UR | VulDB |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
hermes-agentNousResearch |
|
References
- VDB-365329 | NousResearch hermes-agent prompt_builder.py _scan_context_content injectionvdb-entrytechnical-description
- VDB-365329 | CTI Indicators (IOB, IOC, TTP, IOA)signaturepermissions-required
- Submit #812227 | NousResearch hermes-agent 2026.4.23 Injection (CWE-74)third-party-advisory
- https://gist.github.com/YLChen-007/581fd92de5548fbaacb2092e848a75ccexploit
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