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[USN-9055-1] pecl_http vulnerability

Posted on 12 November 2026
Ubuntu Security

==========================================================================Ubuntu Security Notice USN-9055-1
November 11, 2026

php-pecl-http vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 16.04 LTS

Summary:

pecl_http could be made to crash or run programs if it received specially
crafted network traffic.

Software Description:
- php-pecl-http: Extended HTTP support for PHP

Details:

It was discovered that pecl_http incorrectly handled certain HTTP request
parameters, leading to a type confusion. A remote attacker could possibly
use this issue to cause PHP to crash, resulting in a denial of service, or
execute arbitrary code.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 16.04 LTS
php-pecl-http 3.0.1-0ubuntu5+esm1
Available with Ubuntu Pro

In general, a standard system update will make all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-9055-1
CVE-2016-7398

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