PHP 5.4 is no longer officially supported by the PHP project.
Official support refers to that provided direct by the PHP Project.
If you install PHP via third-party packages, support timelines may be different.
Please read the Release Support Policy for more information.
The latest release of PHP 5.4 is
5.4.45.
Source Code
Change Log
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core
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Fixed bug
#69768 (escapeshell*() doesn't cater to !).
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Fixed bug
#69874 (Can't set empty additional_headers for mail()), regression from fix to bug #68776.
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mysqlnd
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Fixed bug
#69669 (mysqlnd is vulnerable to BACKRONYM). (CVE-2015-3152)
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phar
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Fixed bug
#69958 (Segfault in Phar::convertToData on invalid file). (CVE-2015-5589)
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Fixed bug
#69923 (Buffer overflow and stack smashing error in phar_fix_filepath). (CVE-2015-5590)