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
#68710 (Use After Free Vulnerability in PHP's unserialize()). (CVE-2015-0231)
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cgi
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Fixed bug
#68618 (out of bounds read crashes php-cgi). (CVE-2014-9427)
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exif
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Fixed bug
#68799: Free called on unitialized pointer. (CVE-2015-0232)
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fileinfo
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openssl
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Fixed bug
#55618 (use case-insensitive cert name matching).