Php Version 5640 Vulnerabilities Link Repack Jun 2026

The U.S. government's repository of standards-based vulnerability management data. Search the NVD CVE Portal using the keyword "PHP" to view active listings.

Running legacy applications on PHP 5.6.40 poses immense enterprise security risks. Because it is unmaintained, newly discovered infrastructure flaws—such as the recent —can completely compromise servers running legacy PHP runtimes. Core Security Vulnerabilities in PHP 5.6.40 php version 5640 vulnerabilities link

PHP version 5.6.40 was released on January 10, 2019, as the final security release for the PHP 5.6 branch. While it addressed several critical security bugs at the time, it reached its official , meaning it has not received official security updates or bug fixes for over seven years. Key Vulnerabilities in PHP 5.6.40 Running legacy applications on PHP 5

Use tools like PHPStan or Rector to scan your PHP 5.6 code and automatically identify compatibility issues, deprecated functions, and syntax errors relative to PHP 8.x. While it addressed several critical security bugs at

Although 5.6.40 was a "security release," it remains vulnerable to numerous exploits discovered after its EOL. Because the PHP project no longer maintains this branch, any vulnerability found since 2019 remains in official builds.

Version 5.6.40 was primarily released to address the following critical and high-severity flaws found in earlier 5.6.x versions:

Released on January 10, 2019, as a final "security-only" release, PHP 5.6.40 fixed a specific batch of critical bugs. However, any vulnerabilities discovered in the core engine after that date remain completely unpatched by the official PHP development team.