Description
A security flaw has been discovered in NousResearch hermes-agent up to 2026.4.16. This vulnerability affects the function _is_blocked_device of the file tools/file_tools.py of the component read_file Tool. Performing a manipulation results in path traversal. The attack may be initiated remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| NousResearch | hermes-agent | 2026.4.0, 2026.4.1, 2026.4.2, 2026.4.3, 2026.4.4, 2026.4.5, 2026.4.6, 2026.4.7, 2026.4.8, 2026.4.9, 2026.4.10, 2026.4.11, 2026.4.12, 2026.4.13, 2026.4.14, 2026.4.15, 2026.4.16 | — |
References
- VDB-365314 | NousResearch hermes-agent read_file Tool file_tools.py _is_blocked_device path traversal vdb-entry technical-description
- VDB-365314 | CTI Indicators (IOB, IOC, TTP, IOA) signature permissions-required
- Submit #812214 | NousResearch hermes-agent 2026.4.16 Path Traversal (CWE-22) third-party-advisory
- https://gist.github.com/YLChen-007/1d1aeff404cb88e06ec2fb3377f49fef exploit