Apparently about 40% of PHP apps are still on PHP 7 and 5...
There are rare occasions when circumstances are more important than preserving an "EOL" designation. This appears to be one of those times where "official" centralized patches really should be made available for at least PHP5.6 and PHP7.4, and perhaps even 5.5 and all of 7.x. They're not covering themselves in glory by refusing.
I see Debian has packages.
5.6.40-104+0~20261021.134+debian12~1.gbp7401dd
7.4.33-31+0~20261021.121+debian12~1.gbpe9c428