UpHeron
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Servers and applications

CVE-2016-5771

spl_array.c in the SPL extension in PHP before 5.5.37 and 5.6.x before 5.6.23 improperly interacts with the unserialize implementation and garbage collection, which allows remote attackers to execute arbitrary code or cause a denial of service (use-after-free and application crash) via crafted serialized data.

Severity
Critical 9.8
Published
7 Aug 2016
Last changed
17 Jun 2026
Added to UpHeron
14 Oct 2026
Fixed in
5.5.37, 5.6.23, 7.0.8
Sources
NVD

Affected software

SoftwareAffected versions
PHPServers and applications · cpe:a:php:php
  • Every version before 5.5.37
  • From 5.6.0 before 5.6.23
  • From 7.0.0 before 7.0.8

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2016-5771
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2016-5771