Vulnerability/
https://seclists.org/oss-sec/2026/q4/398

https://seclists.org/oss-sec/2026/q4/398: PHP 5.4.23 (custom 5.4-5.6) backported patch for PHP2Shell OOM vulnerability (CVE-2026-109618)

Published Oct 27, 2026

Updated

Affected Software

1 affected component

PHP PHP=5.4.23, =5.5, =5.6

Frequently Asked Questions

Which legacy PHP branches does the custom backport explicitly target?

The patch is described as targeting PHP 5.4, PHP 5.5, and PHP 5.6. These branches are described as no longer supported by the upstream PHP team.

Is a PHP 5.6 backport from the Ondřej Surý Ubuntu PPA mentioned?

Yes. The discussion states that the referenced PPA had a PHP 5.6 backport on the same day.

Does the discussion establish that the custom patch is equivalent to other available backports?

No. A participant asks whether the patch was compared with other patches, but the provided discussion does not include a comparison result or compatibility conclusion.

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