The PHP 8.5.8 release candidate has been launched with essential fixes addressing Opcache crashes, memory leaks in GD and Zlib, and a security bypass in the Phar directory. Improvements in core stability include resolutions for NaN coercion panics and other critical issues that can disrupt scheduled tasks. Additionally, the update enhances SOAP handling and URI error logging, thus reducing debugging challenges for developers. It is highly recommended that teams test this release candidate on staging servers to identify potential issues before the final stable release
PHP 8.5.8 RC Fixes Opcache Crashes, Memory Leaks, and Phar Security Bypass Before Stable Release
The PHP 8.5.8 release candidate arrives with critical patches for Opcache crashes, memory leaks in GD and Zlib, and a Phar directory bypass that could expose sensitive files. Core stability improves through fixes for NaN coercion panics, BCMath rounding overflow, and broken DatePeriod recurrence checks that often break scheduled tasks. SOAP handles raw input correctly now while URI error logging stops bleeding validation failures across requests, making debugging noticeably less frustrating. Teams should run the test suite on staging servers immediately to catch these edge cases before the stable build hits production environments.
