CVE-2026-9367 NousResearch hermes-agent terminal_tool approval.py detect_dangerous_command os command injection
Remote attackers can execute arbitrary OS commands via the terminal tool's command detection logic in the hermes-agent library.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-9367?
CVE-2026-9367 is a medium-severity command injection vulnerability in NousResearch hermes-agent, published on 24 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability was determined in NousResearch hermes-agent up to 5157f5427f19488b31c6fdebbacd15d798ce7f63. This affects the function detect_dangerous_command of the file tools/approval.py of the component terminal_tool. This manipulation causes os command injection. It is possible to initiate the attack remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.
Which versions are affected by CVE-2026-9367?
How do I fix CVE-2026-9367?
No fix has been published for CVE-2026-9367 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-9367 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-9367 exists.
Sources
Also known as GHSA-h9mm-g7gx-9mx6.