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: Fixed multiple heap-based buffer overflows in the mbstring extension ( CVE-2019-9023 ) and an integer underflow in the gd graphics library ( CVE-2016-10166 ).
Use tools like PHPCompatibility (for PHP_CodeSniffer) to scan your codebase for deprecated functions.
PHP 5.6.40 is an older version of PHP, and as such, it has some known vulnerabilities. According to the PHP security team, PHP 5.6.40 has several fixed vulnerabilities. Here are a few:
: Resolved issues in the xmlrpc_decode function ( CVE-2019-9020 ) and the PHAR extension ( CVE-2019-9021 ) that could lead to memory disclosure. php version 5640 vulnerabilities link
This changelog is the master list, maintained by the PHP development team. It details every bug and security fix that went into the release. For version 5.6.40, it lists numerous fixes, many of which are for critical security issues, including:
A flaw in the xmlrpc_decode function that can lead to information disclosure or crashes.
Since support ended, numerous security issues have been discovered and left unfixed in PHP 5.6.40: : Fixed multiple heap-based buffer overflows in the
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The 5.6.40 release specifically fixed the following critical security flaws: According to the PHP security team, PHP 5
Examples of CVEs patched in these Debian builds include:
Please note that PHP 5.6.40 is an outdated version, and using it may expose your application to known security vulnerabilities. Upgrading to a newer PHP version is essential to ensure your application's security and stability.