# RHSA-2026:22649: php8.4 security update

RHSA-2026:22649, released May 10, 2026, fixes 8 CVEs in php8.4 (version 8.4.21-1.el10_2). None of them is reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/fix/linux/rhsa-2026-22649
- Platform: Linux
- Released: May 10, 2026
- Priority: Urgent (Closes CVE-2026-6104, rated Critical)
- CVEs: 8, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://access.redhat.com/errata/RHSA-2026:22649

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [php8.4](https://patchblox.com/security/data/product/linux/php8.4.md) | RHEL 10 | 8.4.21-1.el10_2 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-6104](https://patchblox.com/security/data/cve/CVE-2026-6104.md) | Urgent | php8.4: In PHP versions 8.4.* before 8.4.21 and 8.5.* before 8.5.6, when an encoding name containing an embedded NUL byte is... | 9.1 | 0.0047 |  |
| [CVE-2026-6722](https://patchblox.com/security/data/cve/CVE-2026-6722.md) | High | php-pecl-xdebug3: PHP is an HTML-embedded scripting language commonly used with the Apache HTTP Server.  Security Fix(es):  * PHP: PHP:... | 9.8 | 0.0089 |  |
| [CVE-2026-7262](https://patchblox.com/security/data/cve/CVE-2026-7262.md) | High | apcu-panel: PHP is an HTML-embedded scripting language commonly used with the Apache HTTP Server | 8.2 | 0.0078 |  |
| [CVE-2026-7568](https://patchblox.com/security/data/cve/CVE-2026-7568.md) | High | apcu-panel: PHP is an HTML-embedded scripting language commonly used with the Apache HTTP Server | 8.2 | 0.0046 |  |
| [CVE-2026-7258](https://patchblox.com/security/data/cve/CVE-2026-7258.md) | High | Out-of-bounds read in urldecode() on NetBSD | 8.2 | 0.0036 |  |
| [CVE-2026-7263](https://patchblox.com/security/data/cve/CVE-2026-7263.md) | High | php8.4: In PHP versions 8.4.* before 8.4.21 and 8.5.* before 8.5.6, DOMNode::C14N() method may process the XML data incorrect... | 8.2 | 0.0035 |  |
| [CVE-2026-7261](https://patchblox.com/security/data/cve/CVE-2026-7261.md) | High | apcu-panel: PHP is an HTML-embedded scripting language commonly used with the Apache HTTP Server.  Security Fix(es):  * PHP: PHP:... | 9.8 | 0.0030 |  |
| [CVE-2026-6735](https://patchblox.com/security/data/cve/CVE-2026-6735.md) | High | XSS within PHP-FPM status endpoint | 8.2 | 0.0019 |  |

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Data as of 2026-11-07T12:40:37Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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