Critical PHP Fixes Put Crypto Checkout Infrastructure In Focus

TL;DR: PHP released fixes for two critical flaws on October 21 and urged immediate updates. Crypto businesses using PHP-based web infrastructure should check that layer of their systems; the advisory does not announce a breach of Bitcoin or BTCPay Server itself. Security work for a crypto business does not end at its wallet. A critical PHP update has put ordinary web-server software back on the operational agenda. The PHP project’s October 21 advisory identifies two vulnerabilities that can allow unauthenticated remote code execution. Fixed upstream releases are PHP 8.5.12, 8.4.27, 8.3.36 and 8.2.35.