CVE-2026-9350 Details
Description
A vulnerability was identified in NousResearch hermes-agent up to 2026.4.16. This affects the function check_all_command_guards of the file tools/approval.py of the component Batch Runner. Such manipulation leads to missing authorization. The attack can be launched remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.
A vulnerability exists in NousResearch Hermes-Agent versions through 2026.4.16, specifically within the Batch Runner component. The issue arises in the 'check_all_command_guards' function of 'tools/approval.py', where dangerous commands are automatically approved when executed via 'batch_runner.py'. This oversight occurs because the batch runner does not activate essential interactive environment variables, leading to a missing authorization check. As a result, prompt injection payloads embedded in untrusted JSONL datasets can be exploited to execute arbitrary commands on the host machine without user consent. The vulnerability can be exploited remotely, and a public exploit is available.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed May 24, 2026CISA-ADP
Assessed May 26, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://gist.github.com/YLChen-007/22cada4c9060f5123dde6185135ae3ab | [email protected] | ExploitTechnical Description |
| https://vuldb.com/submit/812213 | [email protected] | Permission Required |
| https://vuldb.com/vuln/365313 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/vuln/365313/cti | [email protected] | AdvisoryPermission Required |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-862 | Missing Authorization | [email protected] |
| CWE-863 | Incorrect Authorization | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| NousResearch hermes-agent | <= v2026.4.16 (semver) |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 23, 2026 | CVE Translated | [email protected] |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 24, 2026 | New CVE Received | [email protected] |