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CVE-2026-55761

🗓️ 08 Jul 2026 15:03:54Reported by GitHub_MType 
cve
 cve
🔗 web.nvd.nist.gov👁 50 Views🌐 WEB

Unauthenticated restore and init endpoints enable admin takeover on uninitialized Portainer instances.

Related
Detection
Affected
Refs
Paths
NVD
Vulners
Node
OR
portainerportainerRange2.39.02.39.4community
portainerportainerRange2.40.02.43.0community
[
  {
    "vendor": "portainer",
    "product": "portainer",
    "versions": [
      {
        "version": ">= 2.39.0, < 2.39.4",
        "status": "affected"
      }
    ]
  }
]
ParameterPositionPathDescriptionCWE
backuprequest body/api/restoreUnauthenticated restore endpoint exposed during setup allows crafting/restoring a backup without authentication.CWE-287
admin_passwordrequest body/api/users/admin/initUnauthenticated administrator initialization endpoint exposed during setup allows creating the first admin account and gaining full access.CWE-287
admin_emailrequest body/api/users/admin/initUnauthenticated administrator initialization endpoint exposed during setup allows creating the first admin account and gaining full access.CWE-287

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10 Jul 2026 17:48Current
5.9Medium risk
Vulners AI Score5.9
CVSS 3.15.9
CVSS 47.1
EPSS0.00291
SSVC
50