CVE-2026-9350 NousResearch hermes-agent Batch Runner approval.py check_all_command_guards authorization
Remote attackers can bypass command guard checks in the Batch Runner due to missing authorization, potentially executing unauthorized commands.
- 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-2026-9350?
CVE-2026-9350 is a medium-severity missing authorization 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 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.
Which versions are affected by CVE-2026-9350?
How do I fix CVE-2026-9350?
No fix has been published for CVE-2026-9350 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-9350 being exploited?
There is no known exploitation of CVE-2026-9350 in the wild and no public exploit code.
Sources
Also known as GHSA-4j8w-8wvv-4969.