CVE-2026-9351 Details
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.
A path traversal vulnerability has been identified in NousResearch Hermes-Agent versions through 2026.4.16. The issue arises in the Read_File tool, specifically within the '_is_blocked_device' function in 'tools/file_tools.py'. The vulnerability allows for a manipulation that bypasses the device path blocklist, leading to a denial-of-service condition. The issue can be exploited remotely, and a public exploit is available.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed May 24, 2026CISA-ADP
Assessed May 26, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://gist.github.com/YLChen-007/1d1aeff404cb88e06ec2fb3377f49fef | [email protected] | ExploitTechnical Description |
| https://vuldb.com/submit/812214 | [email protected] | Permission Required |
| https://vuldb.com/vuln/365314 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/vuln/365314/cti | [email protected] | AdvisoryPermission Required |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-22 | Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| NousResearch hermes-agent | <= v2026.4.16 (semver) |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 23, 2026 | CVE Translated | [email protected] |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 24, 2026 | New CVE Received | [email protected] |