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CVE-2026-6409

🗓️ 16 Apr 2026 14:30:51Reported by GoogleType 
cve
 cve
🔗 web.nvd.nist.gov👁 26 Views

DoS vulnerability in the Protobuf PHP library when parsing untrusted input; malformed messages with negative varints or deep recursion can crash the application.

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[
  {
    "vendor": "Protocol Buffers",
    "product": "Protobuf-php (Pecl)",
    "versions": [
      {
        "status": "affected",
        "version": "0",
        "lessThan": "5.34.0-RC1",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "0",
        "lessThan": "4.33.6",
        "versionType": "semver"
      }
    ],
    "defaultStatus": "unaffected"
  }
]

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17 Apr 2026 15:17Current
5.8Medium risk
Vulners AI Score5.8
CVSS 47.1
EPSS0.00031
SSVC
26