CVE-2006-0207: Multiple HTTP response splitting vulnerabilities in PHP 5.1.1 allow remote attackers to inject arbitrary HT...

Security readout for executives and security teams

This old PHP flaw lets a remote attacker influence HTTP response headers generated by PHP 5.1.1. In business terms, exposed legacy PHP services could send unexpected headers to users or intermediaries. The source bundle does not show active exploitation or a CVSS score. Exposure is most likely on legacy web servers still running PHP 5.1.1 or distribution packages based on it. Modern PHP deployments should not be assumed affected from the supplied evidence alone. Prioritize remediation where legacy PHP 5.1.1 is internet-facing or handles authenticated sessions. This is an old issue, but unsupported runtimes increase operational risk and limit reliable vendor support. Mitigation focus: Identify any systems running PHP 5.1.1 or affected vendor PHP packages.; Apply the relevant PHP or distribution vendor security update.; Use PHP 5.1.2 or later only where vendor guidance confirms remediation..

Prepared

Jun 29, 2026, 15:05 UTC (UTC+00:00)

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