NousResearch hermes-agent 0.8.0 tools/file_tools.py _check_sensitive_path symlink

CVSS Meta Temp Score
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CTI Interest Score
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4.0$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in NousResearch hermes-agent 0.8.0. This vulnerability affects the function _check_sensitive_path of the file tools/file_tools.py. This manipulation causes symlink. This vulnerability is handled as CVE-2026-7397. It is possible to launch the attack on the local host. Additionally, an exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability has been found in NousResearch hermes-agent 0.8.0 and classified as critical. Affected by this vulnerability is the function _check_sensitive_path of the file tools/file_tools.py. The manipulation with an unknown input leads to a symlink vulnerability. The CWE definition for the vulnerability is CWE-61. The product, when opening a file or directory, does not sufficiently account for when the file is a symbolic link that resolves to a target outside of the intended control sphere. This could allow an attacker to cause the product to operate on unauthorized files. As an impact it is known to affect integrity, and availability.

The advisory is shared at github.com. This vulnerability is known as CVE-2026-7397. The exploitation appears to be easy. An attack has to be approached locally. Technical details and also a public exploit are known.

It is possible to download the exploit at github.com. It is declared as proof-of-concept.

Upgrading to version 0.9.0 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 311dac197145e19e07df68feba2cd55d896a3cd1 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-26273). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.0

VulDB Base Score: 4.4
VulDB Temp Score: 4.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Symlink
CWE: CWE-61 / CWE-59
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: hermes-agent 0.9.0
Patch: 311dac197145e19e07df68feba2cd55d896a3cd1

Timelineinfo

04/29/2026 Advisory disclosed
04/29/2026 +0 days VulDB entry created
04/29/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 8734
Status: Confirmed
Confirmation: 🔒

CVE: CVE-2026-7397 (🔒)
GCVE (CVE): GCVE-0-2026-7397
GCVE (VulDB): GCVE-100-360121
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 04/29/2026 12:49
Updated: 04/29/2026 22:49
Changes: 04/29/2026 12:49 (62), 04/29/2026 22:49 (1)
Complete: 🔍
Submitter: Yu_Bao
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #803270: NousResearch hermes-agent 0.8.0 Path Write Protection Bypass (by Yu_Bao)

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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