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PHP CVEs

Vulnerabilities in the PHP language itself, and which PHP versions they affect.

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CVE-2009-4418

MEDIUM 5.0 CVSS 2.0
Published
December 24, 2009
Last modified
June 16, 2026
NVD status
Modified
Reported by
cve@mitre.org
Weakness
CWE-189
CVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:P

Description

The unserialize function in PHP 5.3.0 and earlier allows context-dependent attackers to cause a denial of service (resource consumption) via a deeply nested serialized variable, as demonstrated by a string beginning with a:1: followed by many {a:1: sequences.

Affected products and versions

  • PHP — Up to and including 5.3.0
  • PHP versions 5, 5.0.0, 5.0.0beta1, 5.0.0beta2, 5.0.0beta3, 5.0.0beta4, 5.0.0rc1, 5.0.0rc2, 5.0.0rc3, 5.0.1, 5.0.2, 5.0.3, 5.0.4, 5.0.5, 5.0rc1, 5.0rc2, 5.0rc3, 5.1.0, 5.1.1, 5.1.2, 5.1.3, 5.1.4, 5.1.5, 5.1.6, 5.2.0, 5.2.1, 5.2.2, 5.2.3, 5.2.4, 5.2.5, 5.2.6, 5.2.7, 5.2.8, 5.2.9, 5.2.10, 5.2.11

References

  • www.suspekt.org http://www.suspekt.org/2009/11/28/shocking-news-in-php-exploitation/
  • www.suspekt.org http://www.suspekt.org/downloads/POC2009-ShockingNewsInPHPExploitation.pdf
  • nvd.nist.gov Official NVD record