What’s Vulnerable › Vulnerabilities

CVE-2026-9368: NousResearch hermes-agent Environment Variable code_execution_tool.py execute_code sandbox

• Severity: high (CVSS 7.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-24 · updated 2026-07-23
• Weakness: CWE-264

Description

A vulnerability was identified in NousResearch hermes-agent up to 2026.4.16. This impacts the function execute_code of the file tools/code_execution_tool.py of the component Environment Variable Handler. Such manipulation leads to sandbox issue. It is possible to launch the attack 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.

Affected products

• NousResearch hermes-agent: 2026.4.0, 2026.4.1, 2026.4.2, 2026.4.3, 2026.4.4, 2026.4.5 (+11)

References

• https://gist.github.com/YLChen-007/43c72d19668421abe8ce10f299323a0a
• https://vuldb.com/submit/812229
• https://vuldb.com/vuln/365331
• https://vuldb.com/vuln/365331/cti

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