CVE-2026-9350
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedA 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.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceA missing authorization vulnerability exists in the check_all_command_guards function within tools/approval.py of the NousResearch hermes-agent Batch Runner component. This allows remote attackers to bypass authorization checks and potentially execute commands they should not have permission to run.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- Low
- Integrity
- Low
- Availability
- Low
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify hermes-agent installation versionLocate the hermes-agent installation and retrieve its version number (for example, by checking the package metadata, version file, or running a version command if available). Compare it against the affected range: any version up to and including 2026.4.16 is affected.Affected if The installed version is 2026.4.16 or earlier.
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Confirm Batch Runner component is in useDetermine whether the Batch Runner component is enabled or actively used in the deployment (for example, check configuration files, runtime settings, or logs that indicate Batch Runner processing).Affected if The Batch Runner component is enabled or processing commands.
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Inspect the check_all_command_guards functionLocate the tools/approval.py file within the hermes-agent installation and examine the check_all_command_guards function for missing or insufficient authorization logic.Affected if The function exists but lacks proper authorization validation before command execution.
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Review Batch Runner command execution flowTrace how the Batch Runner processes commands and verify whether user permission checks occur before execution (for example, analyze the code path from Batch Runner to command dispatch).Affected if Commands can be processed by the Batch Runner without passing through authorization verification.
A user is affected if hermes-agent version 2026.4.16 or earlier is installed, the Batch Runner component is enabled, and the check_all_command_guards function in tools/approval.py does not enforce authorization before executing commands.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataImplement proper authorization validation in the check_all_command_guards function before executing batch commands. Until the vendor releases a patch, restrict network access to the Batch Runner component and monitor for unauthorized command execution.
- Consultation3.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2026-9350 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2026-9350 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Version or environment caveats, and links to real fixes
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