CVE-2026-53869

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Source

https://cve.org/CVERecord?id=CVE-2026-53869

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53869.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-53869

Aliases

Downstream

MINI (3)

Published

2026-06-17T17:57:30Z

Modified

2026-10-21T02:58:30Z

Severity

8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator

Summary

Hermes Agent < 0.16.0 - DNS Rebinding Bypass via WebSocket Endpoints

Details

Hermes Agent before 0.16.0 contains a DNS rebinding vulnerability in WebSocket endpoints that allows remote attackers to bypass Host and Origin validation. FastAPI HTTP middleware does not execute for WebSocket upgrade requests on /api/pty, /api/ws, /api/pub, and /api/events endpoints, enabling attackers to exploit DNS rebinding and inject malicious commands or read terminal output.

Database specific

{
    "cna_assigner":  "VulnCheck",
    "cwe_ids":  [
        "CWE-306"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53869.json",
    "unresolved_ranges":  [
        {
            "extracted_events":  [
                {
                    "range":  [
                        {
                            "fixed":  "0.16.0"
                        }
                    ],
                    "source":  "AFFECTED_FIELD",
                    "strategy":  "StandardRange"
                }
            ]
        },
        {
            "extracted_events":  [
                {
                    "range":  [
                        {
                            "fixed":  "0.16.0"
                        }
                    ],
                    "source":  "DESCRIPTION"
                }
            ]
        }
    ]
}

References

Affected packages

Git / github.com/nousresearch/hermes-agent

Affected ranges

Type

GIT

Repo

https://github.com/nousresearch/hermes-agent

Events

Introduced

Fixed

3c231eb3979ab9c57d5cd6d02f1d577a3b718b43

Fixed

d9ec90585cf7616b5972e44cf8d92bb569fc3feb

Database specific

Show details

{
    "extracted_events":  [
        {
            "original_tag":  "v2026.6.5",
            "range":  [
                {
                    "fixed":  "3c231eb3979ab9c57d5cd6d02f1d577a3b718b43"
                }
            ],
            "source":  "REFERENCES_TAG"
        },
        {
            "range":  [
                {
                    "fixed":  "d9ec90585cf7616b5972e44cf8d92bb569fc3feb"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        }
    ]
}

Affected versions

v2026.*

v2026.3.12

v2026.3.17

v2026.3.23

v2026.3.28

v2026.3.30

v2026.4.13

v2026.4.16

v2026.4.23

v2026.4.3

v2026.4.30

v2026.4.8

v2026.5.16

v2026.5.7

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53869.json"