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CVE-2021-4461

🗓️ 30 Oct 2025 21:16:23Reported by VulnCheckType 
cve
 cve
🔗 web.nvd.nist.gov👁 66 Views🌐 WEB

Authentication bypass in Seeyon Zhiyuan OA System up to 7.0 SP1 via misdecoded enc in thirdpartyController.do.

Related
Detection
Affected
Refs
Paths
Vulners
CNA
Node
seeyonzhiyuan_oaRange≤7.0
[
  {
    "defaultStatus": "unknown",
    "modules": [
      "thirdpartyController.do – `enc` parameter decoding (LightWeightEncoder) and parsing"
    ],
    "product": "Zhiyuan OA Web Application System",
    "vendor": "Seeyon",
    "versions": [
      {
        "lessThanOrEqual": "7.0 SP1",
        "status": "affected",
        "version": "0",
        "versionType": "custom"
      }
    ]
  }
]
ParameterPositionPathDescriptionCWE
encquery param/thirdpartyController.doImproper decoding and parsing of the 'enc' parameter allows attackers to influence session attributes and assign a session to arbitrary user IDs.CWE-306

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