CVE-2026-9351 | THREATINT

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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.

PUBLISHED Reserved 2026-05-23 | Published 2026-05-24 | Updated 2026-05-24 | Assigner VulDB

MEDIUM: 6.9CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

MEDIUM: 6.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L/E:P/RL:X/RC:R

MEDIUM: 6.5CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L/E:P/RL:X/RC:R

6.4AV:N/AC:L/Au:N/C:N/I:P/A:P/E:POC/RL:ND/RC:UR

Problem types

Path Traversal

Product status

2026.4.0
affected

2026.4.1
affected

2026.4.2
affected

2026.4.3
affected

2026.4.4
affected

2026.4.5
affected

2026.4.6
affected

2026.4.7
affected

2026.4.8
affected

2026.4.9
affected

2026.4.10
affected

2026.4.11
affected

2026.4.12
affected

2026.4.13
affected

2026.4.14
affected

2026.4.15
affected

2026.4.16
affected

Timeline

2026-05-23:	Advisory disclosed
2026-05-23:	VulDB entry created
2026-05-23:	VulDB entry last update

Credits

Eric-h (VulDB User) reporter

VulDB CNA Team coordinator

References

vuldb.com/vuln/365314 (VDB-365314 | NousResearch hermes-agent read_file Tool file_tools.py _is_blocked_device path traversal) vdb-entry technical-description

vuldb.com/vuln/365314/cti (VDB-365314 | CTI Indicators (IOB, IOC, TTP, IOA)) signature permissions-required

vuldb.com/submit/812214 (Submit #812214 | NousResearch hermes-agent 2026.4.16 Path Traversal (CWE-22)) third-party-advisory

gist.github.com/YLChen-007/1d1aeff404cb88e06ec2fb3377f49fef exploit

cve.org (CVE-2026-9351)

nvd.nist.gov (CVE-2026-9351)

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