CVE-2026-7396Public exploitNetwork attack vector

Arbitrary file read via unbounded media paths

Published Apr 29, 2026 · Updated Apr 29, 2026

Path traversal in the WeCom adapter in Nous Research Hermes Agent 0.8.0 allows remote attackers to read local files via outbound media URLs. The _load_outbound_media function resolves file:// and relative paths, then calls read_bytes without verifying that the resolved path stays under an allowed directory. A WeCom message must trigger an outbound media attachment; exploitation exposes any file readable by the Hermes process.

CVSS severity5.3
Medium
EPSS probability0.48%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in the WeCom adapter in Nous Research Hermes Agent 0.8.0 allows remote attackers to read local files via outbound media URLs. The _load_outbound_media function resolves file:// and relative paths, then calls read_bytes without verifying that the resolved path stays under an allowed directory. A WeCom message must trigger an outbound media attachment; exploitation exposes any file readable by the Hermes process.

The record

CVE
CVE-2026-7396
Published
Apr 29, 2026
Updated
Apr 29, 2026
Vendor
Nous Research
Product
Hermes Agent
Classifications
CWE-22, T1005
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 29, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 29, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0.8.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Nous Research · Hermes Agentversion=0.8.0

Published CVSS scores

5.0VulDBAV:N/AC:L/Au:N/C:P/I:N/A:N
5.5VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
5.3VulDBCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1005Data from Local System

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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