# Release: Elastic Beanstalk Amazon Linux 2023 PHP platform updates for PHP 8.5 and PHP 8.4 on October 21, 2026
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This release provides new versions for AWS Elastic Beanstalk PHP 8.5 and PHP 8.4 platforms based on Amazon Linux 2023. The release includes security updates. It also includes PHP updates, and restores the default values of two PHP configuration settings.

**Release date:** October 21, 2026

To update your environments to the new platform versions, see [Updating your Elastic Beanstalk environment's platform version](https://docs.aws.amazon.com/elasticbeanstalk/latest/dg/using-features.platform.upgrade.html) in the *AWS Elastic Beanstalk Developer Guide*. If you've turned on [managed platform updates](https://docs.aws.amazon.com/elasticbeanstalk/latest/dg/environment-platform-update-managed.html), Elastic Beanstalk applies the new platform versions to your environments during their weekly maintenance window.

## Changes
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The following table lists the changes included in this release.

**Note**  
Be aware that at the time these release notes are published, the new platform versions might not yet be available in all the AWS Regions that Elastic Beanstalk supports. It might take a few hours for the release to complete.


<table>
<thead>
  <tr><th><b>Category</b></th><th><b>Description</b></th></tr>
</thead>
<tbody>
  <tr><td><b>Platform-specific updates</b></td><td>Made these platform-specific updates:
<table>
<thead>
  <tr><th><b>Platform</b></th><th><b>Update</b></th></tr>
</thead>
<tbody>
  <tr><td><b>PHP</b></td><td> <ul><li> Updated PHP 8.5 to version <a href="https://www.php.net/ChangeLog-8.php#8.5.12">8.5.12</a>. </li><li> Updated PHP 8.4 to version <a href="https://www.php.net/ChangeLog-8.php#8.4.27">8.4.27</a>. </li><li> PHP 8.5.12 and PHP 8.4.27 address CVE-2026-109618 and CVE-2026-109619. For details, see the <a href="https://www.php.net/archive/2026.php#2026-10-21-5">PHP security announcement</a>. The <a href="release-2026-10-22-al2023-php82-php83.md">PHP 8.3 and PHP 8.2 platform update</a> includes the PHP 8.3 and PHP 8.2 versions that address these issues. </li><li> Restored the default values of the <code>session.upload_progress.enabled</code> setting on the PHP 8.5 and PHP 8.4 platform branches, and <code>fatal_error_backtraces</code> on PHP 8.5. The <a href="release-2026-10-21-al2023-php.md">previous release</a> turned off these settings. </li></ul> </td></tr>
</tbody>
</table>
</td></tr>
</tbody>
</table>


## New platform versions
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**Topics**
+ [PHP](#release-2026-10-21-al2023-php84-php85.platforms.PHP)

### PHP
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|  Platform Version and *Solution Stack Name*   |  AMI  |  Language  |  Package Manager  |  Proxy Server  | 
| --- | --- | --- | --- | --- | 
|  ** PHP 8.5 AL2023 version 4.13.13** <br /> * 64bit Amazon Linux 2023 v4.13.13 running PHP 8.5 *  | 2023.12.20261016 | PHP 8.5.12 | Composer 2.10.3, PIE 1.5.2 | nginx 1.30.5 (default), Apache 2.4.69 | 
|  ** PHP 8.4 AL2023 version 4.13.13** <br /> * 64bit Amazon Linux 2023 v4.13.13 running PHP 8.4 *  | 2023.12.20261016 | PHP 8.4.27 | Composer 2.10.3, PIE 1.5.2 | nginx 1.30.5 (default), Apache 2.4.69 |