CVE-2026-7397: NousResearch hermes-agent file_tools.py _check_sensitive_path symlink

Severity: medium (CVSS 4.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-04-29 · updated 2026-06-17
Weakness: CWE-59

Description

A security flaw has been discovered in NousResearch hermes-agent 0.8.0. This affects the function _check_sensitive_path of the file tools/file_tools.py. The manipulation results in symlink following. Attacking locally is a requirement. The exploit has been released to the public and may be used for attacks. Upgrading to version 0.9.0 is able to mitigate this issue. The patch is identified as 311dac197145e19e07df68feba2cd55d896a3cd1. Upgrading the affected component is recommended.

Affected products

NousResearch hermes-agent: 0.8.0

References

https://github.com/NousResearch/hermes-agent/
https://github.com/NousResearch/hermes-agent/commit/311dac197145e19e07df68feba2cd55d896a3cd1
https://github.com/NousResearch/hermes-agent/issues/8734
https://github.com/NousResearch/hermes-agent/pull/8829
https://github.com/NousResearch/hermes-agent/releases/tag/v2026.4.13
https://vuldb.com/submit/803270
https://vuldb.com/vuln/360121
https://vuldb.com/vuln/360121/cti

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