CVE-2026-9369: Hermes agent Hermes-agent Has An Incorrect Comparison Vulnerability

LOW
Advisory Identifier: GHSA-cv5c-mh6j-wvp9
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CVSS 5.3
CWE-697
Published
Advisory Summary

CVE-2026-9369 is a LOW (CVSS 5.3) hermes-agent has an incorrect comparison vulnerability (CWE-697: Incorrect Comparison) affecting Hermes agent libraries in the PyPI ecosystem. The issue involves hermes-agent has an incorrect comparison. Remediation is available by upgrading affected packages to version 0.15.0.

CVE-2026-9369 at a Glance

CVE Identifier CVE-2026-9369
GHSA Identifier GHSA-cv5c-mh6j-wvp9
Severity LOW
CVSS v3.1 Base Score 5.3
CWE Classification CWE-697: Incorrect Comparison
Affected Product Hermes agent
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 5.3

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L).

Attack Vector Local (AV:L)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality Low (C:L)
Integrity Low (I:L)
Availability Low (A:L)

How to Fix CVE-2026-9369

To remediate this vulnerability, upgrade all affected Hermes agent dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

hermes-agent fixed: 0.15.0 
pip install hermes-agent>=0.15.0
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

pip show hermes-agent

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2026-9369, inspect your installed packages using pip:

pip show hermes-agent

Analyze the terminal output to locate any version of Hermes agent in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.15.0), your application is affected.

Note: The pip show hermes-agent command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-697: Incorrect Comparison, where the product compares two entities in a security-relevant context, but the comparison is incorrect. In Hermes agent, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

A security flaw has been discovered in NousResearch hermes-agent 2026.4.23. Affected is the function _discover_dashboard_plugins of the file hermes_cli/web_server.py of the component CLI web-dashboard Interface. Performing a manipulation of the argument HERMES_ENABLE_PROJECT_PLUGINS results in incorrect comparison. The attack is only possible with local access. 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.

CVE-2026-9369 Affected Hermes agent Versions

1 component(s)
Fixed Versions:
0.15.0
Product / Package Ecosystem Affected Versions Fixed Version
hermes-agent
pypi/hermes-agent
PyPI
< 0.15.0
0.15.0

References

NVD — CVE-2026-9369 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-9369
Security Fix Commit FIX COMMIT
https://github.com/NousResearch/hermes-agent/commit/09f85f2cf79362a2f7963754b49a44cb3d234176
Hermes agent Source Repository REPOSITORY
https://gist.github.com/YLChen-007/062b77ceac6aa9844842a616f5d2ef30
Hermes agent Source Repository REPOSITORY
https://github.com/NousResearch/hermes-agent
vuldb.com/submit/812230 WEB
https://vuldb.com/submit/812230
vuldb.com/vuln/365332 WEB
https://vuldb.com/vuln/365332
vuldb.com/vuln/365332/cti WEB
https://vuldb.com/vuln/365332/cti

Frequently Asked Questions

What is CVE-2026-9369?
CVE-2026-9369 is a security vulnerability in Hermes agent involving hermes-agent has an Incorrect Comparison under CWE-697: Incorrect Comparison.
Which Hermes agent versions are affected?
Affected versions include releases prior to 0.15.0 across affected packages: hermes-agent.
What version fixes CVE-2026-9369?
Upgrading to 0.15.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is hermes-agent affected?
Yes, hermes-agent is affected in releases prior to 0.15.0. Upgrade your dependency to 0.15.0 or later.
What is the CVSS score of CVE-2026-9369?
CVE-2026-9369 has a CVSS v3.1 base score of 5.3 (LOW) with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
What CWE is associated with CVE-2026-9369?
CVE-2026-9369 is classified under CWE-697: Incorrect Comparison (The product compares two entities in a security-relevant context, but the comparison is incorrect.).
How can I check PyPI dependencies for CVE-2026-9369?
Run the dependency tree command: 'pip show hermes-agent'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-cv5c-mh6j-wvp9",
  "modified" : "2026-06-30T17:22:26Z",
  "published" : "2026-05-26T13:30:32Z",
  "aliases" : [ "CVE-2026-9369" ],
  "summary" : "hermes-agent has an Incorrect Comparison",
  "details" : "A security flaw has been discovered in NousResearch hermes-agent 2026.4.23. Affected is the function _discover_dashboard_plugins of the file hermes_cli/web_server.py of the component CLI web-dashboard Interface. Performing a manipulation of the argument HERMES_ENABLE_PROJECT_PLUGINS results in incorrect comparison. The attack is only possible with local access. 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.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "hermes-agent"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.15.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-9369"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/NousResearch/hermes-agent/commit/09f85f2cf79362a2f7963754b49a44cb3d234176"
  }, {
    "type" : "WEB",
    "url" : "https://gist.github.com/YLChen-007/062b77ceac6aa9844842a616f5d2ef30"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/NousResearch/hermes-agent"
  }, {
    "type" : "WEB",
    "url" : "https://vuldb.com/submit/812230"
  }, {
    "type" : "WEB",
    "url" : "https://vuldb.com/vuln/365332"
  }, {
    "type" : "WEB",
    "url" : "https://vuldb.com/vuln/365332/cti"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-697" ],
    "severity" : "LOW",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-06-30T17:22:26Z",
    "nvd_published_at" : "2026-05-24T09:16:33Z"
  }
}