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CVE-2026-6104 Global buffer over-read in mb_convert_encoding() with attacker-supplied encoding

🗓️ 10 May 2026 04:35:17Reported by phpType 
cvelist
 cvelist
🔗 www.cve.org👁 36 Views

Global buffer over-read in mb_convert_encoding with a null-byte encoding; affects mbstring functions in PHP before 8.4.21 and 8.5.6.

Related
Affected
Refs
[
  {
    "vendor": "PHP Group",
    "product": "PHP",
    "packageName": "mbstring",
    "versions": [
      {
        "status": "affected",
        "version": "8.4.*",
        "lessThan": "8.4.21",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "8.5.*",
        "lessThan": "8.5.6",
        "versionType": "semver"
      }
    ],
    "defaultStatus": "unaffected"
  }
]

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