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Explainer film · IT security

PHP2Shell

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PHP2Shell

A worker shares its memory across many requests; after an abort a pointer can keep pointing into freed memory and reveal foreign data. The update closes the hole, stopgap measures only partly.

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Chapter 1 · One server, many requests

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PHP2Shell

IT security · PHP2Shell

NewOct 22, 2026 · 4 chapters

An explainer film in four chapters on the PHP flaw PHP2Shell: how a PHP worker handles many requests in the same memory, why a pointer dangles into freed memory after an out-of-memory abort, how a stranger’s password ends up in the attacker’s cookie, and what protects you now. Principle only, no exploit details. Pause anywhere and ask.

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