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Servers and applications

CVE-2014-8142

Use-after-free vulnerability in the process_nested_data function in ext/standard/var_unserializer.re in PHP before 5.4.36, 5.5.x before 5.5.20, and 5.6.x before 5.6.4 allows remote attackers to execute arbitrary code via a crafted unserialize call that leverages improper handling of duplicate keys within the serialized properties of an object, a different vulnerability than CVE-2004-1019.

Severity
High 7.5
Published
20 Dec 2014
Last changed
17 Jun 2026
Added to UpHeron
14 Oct 2026
Sources
NVD

Affected software

SoftwareAffected versions
PHPServers and applications · cpe:a:php:php
  • Version 5.6.3
  • Version 5.6.2
  • Version 5.6.1
  • Version 5.6.0
All 46 release lines
  • Every version up to 5.4.35
  • Version 5.5.0-alpha1
  • Version 5.5.0-alpha2
  • Version 5.5.0-alpha3
  • Version 5.5.0-alpha4
  • Version 5.5.0-alpha5
  • Version 5.5.0-alpha6
  • Version 5.5.0-beta1
  • Version 5.5.0-beta2
  • Version 5.5.0-beta3
  • Version 5.5.0-beta4
  • Version 5.5.0-rc1
  • Version 5.5.0-rc2
  • Version 5.5.0
  • Version 5.5.1
  • Version 5.5.2
  • Version 5.5.3
  • Version 5.5.4
  • Version 5.5.5
  • Version 5.5.6
  • Version 5.5.7
  • Version 5.5.8
  • Version 5.5.9
  • Version 5.5.10
  • Version 5.5.11
  • Version 5.5.12
  • Version 5.5.13
  • Version 5.5.14
  • Version 5.5.15
  • Version 5.5.16
  • Version 5.5.17
  • Version 5.5.18
  • Version 5.5.19
  • Version 5.6.0-alpha1
  • Version 5.6.0-alpha2
  • Version 5.6.0-alpha3
  • Version 5.6.0-alpha4
  • Version 5.6.0-alpha5
  • Version 5.6.0-beta1
  • Version 5.6.0-beta2
  • Version 5.6.0-beta3
  • Version 5.6.0-beta4
  • Version 5.6.0
  • Version 5.6.1
  • Version 5.6.2
  • Version 5.6.3

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2014-8142
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2014-8142