The advisory says of FrankenPHP and LSAPI: "Source analysis indicates that FrankenPHP, analogous to Apache mod_php, calls the request shutdown procedure unconditionally, making it likely susceptible to application-independent attacks. LSAPI models FPM, with application-specific exploits being likely but unvalidated."

The exact words it rests on

Source analysis indicates that FrankenPHP, analogous to Apache mod_php, calls the request shutdown procedure unconditionally, making it likely susceptible to application-independent attacks. LSAPI models FPM, with application-specific exploits being likely but unvalidated.

What the source said when we opened it, on 23 Oct 2026.

The source

GHSA-w8hw-w9fx-j79w: RCE via OOM corruption (CVE-2026-109618)
PHP project (php-src security advisories) · 2026-10-21

Open the sourcearchived copy

Checked

Checked by the notis newsroom on 23 Oct 2026, against the source above.

In the story

PHP patches two critical remote code execution flaws 23 Oct 2026