CVE-2026-53869
- 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
- Published
- 2026-06-17T17:57:30Z
- Modified
- 2026-08-12T03:51:36Z
- 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": [ { "fixed": "0.16.0" } ], "source": "AFFECTED_FIELD" }, { "extracted_events": [ { "fixed": "0.16.0" } ], "source": "DESCRIPTION" } ] }- References
-
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53869.json
- https://github.com/NousResearch/hermes-agent/releases/tag/v2026.6.5
- https://nvd.nist.gov/vuln/detail/CVE-2026-53869
- https://www.vulncheck.com/advisories/hermes-agent-dns-rebinding-bypass-via-websocket-endpoints
- https://github.com/NousResearch/hermes-agent/pull/30221
- https://github.com/NousResearch/hermes-agent/pull/31685
- https://github.com/NousResearch/hermes-agent/commit/d9ec90585cf7616b5972e44cf8d92bb569fc3feb
- https://github.com/NousResearch/hermes-agent