What is CVE-2026-9351?

CVE-2026-9351 is a medium-severity vulnerability in Nousresearch Hermes-agent, classified under Path Traversal. CVSS score: 6.5/10. Published 2026-05-24.

How severe is CVE-2026-9351?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Path Traversal in Nousresearch Hermes-agent

CVE-2026-9351

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…

Vulnerability class: Path Traversal (Directory Traversal)

EPSS: 0.001 (30.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L.

Affected products

Nousresearch Hermes-agent — versions 2026.4.0, 2026.4.1, 2026.4.2

Weakness classification (CWE)

CWE-22 — Path Traversal

References

cna@vuldb.com (technical-description, vdb-entry)
cna@vuldb.com (signature, permissions-required)
cna@vuldb.com (third-party-advisory)
cna@vuldb.com (exploit)

Frequently asked questions

What is CVE-2026-9351?: CVE-2026-9351 is a medium-severity vulnerability in Nousresearch Hermes-agent, classified under Path Traversal. CVSS score: 6.5/10. Published 2026-05-24.
How severe is CVE-2026-9351?: Medium severity. CVSS v3 base score is 6.5 out of 10.