PHP2Shell: Two Critical PHP Flaws, Leaked a Day Before the Fix
Patched PHP2Shell You Might Still Be Vulnerable
Deep Dive
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Last Updated: October 22, 2026
Conclusion
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Disclaimer: Disclaimer: All information is compiled from publicly available data, media reports, and analysis. Actual details may vary.
Summary
PHP2Shell is a pair of critical, unauthenticated remote code execution bugs in PHP core (CVE-2026-109618 and -109619). Two RCEs in PHP's unserialize() core (C: Serializable and E: enum-autoload branches in var_unserializer.re), reproduced on the ... Official advisory: php.net/archive/2026.php PHP fixed two critical vulnerabilities (CVSS v4.0 9.2) that ... Two 9.2 critical flaws in PHP itself, the language behind most websites, and the details leaked a day before the fix. PHP shipped fixes for two critical bugs in its core on October 21, 2026. Both score 9.2 and can let an attacker run code on a web ...