Critical Bug Fixes for PHP 8.4.21 in Fedora 43 and 42

Linuxsecurity

Critical Bug Fixes for PHP 8.4.21 in Fedora 43 and 42

First seen 15 May 2026, 07:57 UTC • •57.8

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ThreatCluster •May 16, 2026 at 07:53 UTC

•CVE-2026-7262 and CVE-2026-7263 published on May 10, 2026, affecting PHP 8.4.21.
•Vulnerabilities lead to potential application crashes and unexpected behavior.
•Users of Fedora 42 and 43 are urged to update PHP to version 8.4.21 immediately.

On May 10, 2026, two critical vulnerabilities were published affecting PHP 8.4.21, specifically CVE-2026-7262 and CVE-2026-7263. These vulnerabilities impact Fedora versions 42 and 43, which utilize PHP for web development. The issues include assertion failures and memory management errors that could lead to application crashes or unexpected behavior. Users are advised to update to the latest PHP version to mitigate these vulnerabilities. The updates were released on May 6, 2026, but the advisories were published on May 14 and 15, 2026. PHP is widely used for dynamic web page generation, making these vulnerabilities significant for many web applications. The current status is that patches are available, and users are encouraged to apply them promptly.

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Timeline

2026-05-06

PHP version 8.4.21 released

Fedora released PHP 8.4.21 with important bug fixes addressing multiple issues.

2026-05-10

CVE-2026-7262 and CVE-2026-7263 published

Two critical vulnerabilities in PHP 8.4.21 were disclosed, affecting Fedora systems.

2026-05-14

Advisory for Fedora 42 published

Linuxsecurity published an advisory detailing the vulnerabilities affecting Fedora 42.

2026-05-15

Advisory for Fedora 43 published

Linuxsecurity published an advisory detailing the vulnerabilities affecting Fedora 43.

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Vulnerability (2)

CVE-2026-7262
CVE-2026-7263

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CVE-2026-7262 related to CVE-2026-7263

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