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Fedora 43 PHP 8.4.21 Important Bug Fixes CVE-2026-7262 2026-c4d1ca4f16

fedora
Calendar Grey May 15, 2026
Scroller Fedora
Explore the latest Fedora update for PHP 8.4.21 addressing critical bugs and enhancing performance.
PHP version 8.4.21 (07 May 2026) Core: Fixed bug GH-19983 (GC assertion failure with fibers, generators and destructors)

Summary

PHP is an HTML-embedded scripting language. PHP attempts to make it

easy for developers to write dynamically generated web pages. PHP also

offers built-in database integration for several commercial and

non-commercial database management systems, so writing a

database-enabled webpage with PHP is fairly simple. The most common

use of PHP coding is probably as a replacement for CGI scripts.

Update Information:

PHP version 8.4.21 (07 May 2026) Core: Fixed bug GH-19983 (GC assertion failure with fibers, generators and destructors). (iliaal) Fixed bug GH-21478 (Forward property operations to real instance for initialized lazy proxies). (iliaal) Fixed bug GH-21605 (Missing addref for Countable::count()). (ilutov) Fixed bug GH-21699 (Assertion failure in shutdown_executor when resolving self::/parent::/static:: callables if the error handler throws). (macoaure) Fixed bug GH-21603 (Missing addref for __unset). (ilutov) Fixed bug GH-21760 (Trait with class constant name conflict against enum case causes SEGV). (Pratik Bhujel) CLI: Fixed bug GH-21754 (--rf command line option with a method triggers ext/reflection deprecation warnings). (DanielEScherzer) Curl: Add support for brotli and zstd on Windows. (Shivam Mathur) DOM: Fixed GHSA-4jhr-8w89-j733 and GH-21566 (Dom\XMLDocument::C14N() emits duplicate xmlns declarations after setAttributeNS()). (CVE-2026-7263) (David Carlier) ...

Topics%20covered

Topics Covered

security advisory fedora php bug fix important CVE

Change Log

* Wed May 6 2026 Remi Collet - 8.4.21-1 - Update to 8.4.21 - http://www.php.net/releases/8_4_21.php

References

Fedora Update Notification FEDORA-2026-c4d1ca4f16 2026-05-15 03:06:23.642297+00:00 Name : php Product : Fedora 43 Version : 8.4.21 Release : 1.fc43 URL : http://www.php.net/ Summary : PHP scripting language for creating dynamic web sites Description : PHP is an HTML-embedded scripting language. PHP attempts to make it easy for developers to write dynamically generated web pages. PHP also offers built-in database integration for several commercial and non-commercial database management systems, so writing a database-enabled webpage with PHP is fairly simple. The most common use of PHP coding is probably as a replacement for CGI scripts.

Update Instructions

This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-c4d1ca4f16' at the command line. For more information, refer to the dnf documentation available at http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label

Severity
important
Lowest
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Critical

Name: php
Product: Fedora 43
Version: 8.4.21
Release: 1.fc43
URL: http://www.php.net/
Summary: PHP scripting language for creating dynamic web sites

Topics%20covered

Topics Covered

security advisory fedora php bug fix important CVE

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