CVE-2007-3294: Multiple buffer overflows in libtidy, as used in the Tidy extension for PHP 5.2.3 and possibly other produc...

Security readout for executives and security teams

This is an old libtidy buffer overflow reported in PHP 5.2.3's Tidy extension. If a vulnerable application passes attacker-controlled data into affected Tidy functions, arbitrary code execution may be possible. The public record does not name a current patch, broad affected list, or confirmed active exploitation. Likely exposure is legacy PHP 5.2.3 deployments using the Tidy extension or other products embedding vulnerable libtidy. Exposure depends on application code passing untrusted input into affected Tidy functions and on platform implementation details. Prioritize this when legacy PHP or libtidy exists on systems that process external HTML. It is not a blanket emergency from the supplied evidence, but arbitrary code execution potential and public exploit reference justify targeted inventory and remediation. Mitigation focus: Identify PHP 5.2.3 and libtidy usage across supported and legacy systems.; Check PHP and libtidy vendor guidance for fixed versions or replacement packages.; Disable the PHP Tidy extension where it is not required..

Prepared

Jun 29, 2026, 05:01 UTC (UTC+00:00)

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