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CVE-2023-3824

Status: ModifiedCritical (9.8)—💥 PoC

In PHP version 8.0.* before 8.0.30,  8.1.* before 8.1.22, and 8.2.* before 8.2.8, when loading phar file, while reading PHAR directory entries, insufficient length checking may lead to a stack buffer overflow, leading potentially to memory corruption or RCE.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

💥 Public exploits

Exploit code or detection templates are publicly available. This is not the same as confirmed active exploitation (KEV), but it raises the risk: patch with priority.

⚠️ GitHub proofs of concept are not verified: some are fake or contain malware. Never run them outside an isolated lab.

Affected technologies (3)

Debian — Debian LinuxFedoraproject — FedoraPHP — PHP

CWEs

References

Raw JSON (NVD)

Show
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  "id": "CVE-2023-3824",
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          "integrityImpact": "HIGH",
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  "affected": [
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      "value": "In PHP version 8.0.* before 8.0.30,  8.1.* before 8.1.22, and 8.2.* before 8.2.8, when loading phar file, while reading PHAR directory entries, insufficient length checking may lead to a stack buffer overflow, leading potentially to memory corruption or RCE."
    },
    {
      "lang": "es",
      "value": "En PHP versión 8.0.* antes de 8.0.30, 8.1.* antes de 8.1.22, y 8.2.* antes de 8.2.8, al cargar el archivo phar, mientras se leen las entradas del directorio PHAR, una comprobación de longitud insuficiente puede conducir a un desbordamiento del búfer de pila, llevando potencialmente a corrupción de memoria o RCE."
    }
  ],
  "lastModified": "2026-06-17T06:14:56.127",
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}