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CVE-2026-53869 Hermes Agent < 0.16.0 - DNS Rebinding Bypass via WebSocket Endpoints

🗓️ 17 Jun 2026 17:57:30Reported by VulnCheckType 
cvelist
 cvelist
🔗 www.cve.org👁 4 Views

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/w...

Related
Affected
Refs
ReporterTitlePublishedViews
Family
Circl
CVE-2026-53869
17 Jun 202621:52
circl
CVE
CVE-2026-53869
17 Jun 202617:57
cve
EUVD
EUVD-2026-37774
17 Jun 202617:57
euvd
NVD
CVE-2026-53869
17 Jun 202619:18
nvd
Positive Technologies
PT-2026-50518
17 Jun 202600:00
ptsecurity
[
  {
    "vendor": "NousResearch",
    "product": "hermes-agent",
    "defaultStatus": "unaffected",
    "packageURL": "pkg:npm/hermes-agent",
    "versions": [
      {
        "version": "0",
        "status": "affected",
        "versionType": "semver",
        "lessThan": "0.16.0"
      },
      {
        "version": "0.16.0",
        "status": "unaffected",
        "versionType": "semver"
      }
    ],
    "repo": "https://github.com/NousResearch/hermes-agent"
  }
]

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17 Jun 2026 17:57Current
CVSS 3.17.5
CVSS 48.7
4