CVE-2006-7243: PHP before 5.3.4 accepts the \0 character in a pathname, which might allow context-dependent attackers to b...

Security readout for executives and security teams

CVE-2006-7243 is an old PHP pathname handling flaw. PHP before 5.3.4 could accept a null byte in a filename, letting an attacker disguise an unsafe target behind an apparently safe extension in vulnerable application logic. Exposure is mainly legacy PHP deployments older than 5.3.4, especially applications that validate file extensions or paths before calling PHP file functions with user-controllable input. Treat this as a legacy technology risk. It is not shown as actively exploited here, but any remaining PHP before 5.3.4 indicates unsupported infrastructure and possible access-control bypass exposure. Mitigation focus: Upgrade PHP runtimes to 5.3.4 or later, or supported vendor backports.; Follow OS or vendor advisories for packaged PHP builds.; Remove legacy PHP versions from production and internet-facing systems..

Prepared

Jun 27, 2026, 18:32 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.