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CVE-2026-33173 Rails Active Storage has possible content type bypass via metadata in direct uploads

🗓️ 23 Mar 2026 23:21:29Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 22 Views

Rails Active Storage direct uploads allow metadata bypass before patches, enabling content spoofing.

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Affected
Refs
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[
  {
    "vendor": "rails",
    "product": "activestorage",
    "versions": [
      {
        "version": ">= 8.1.0.beta1, < 8.1.2.1",
        "status": "affected"
      },
      {
        "version": ">= 8.0.0.beta1, < 8.0.4.1",
        "status": "affected"
      },
      {
        "version": "< 7.2.3.1",
        "status": "affected"
      }
    ]
  }
]

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