CVE-2015-3307: The phar_parse_metadata function in ext/phar/phar.c in PHP before 5.4.40, 5.5.x before 5.5.24, and 5.6.x be...

Security readout for executives and security teams

CVE-2015-3307 is an old PHP flaw in PHAR metadata parsing. A crafted tar archive could corrupt heap metadata and crash the process, with sources noting possible unspecified additional impact. Business urgency is mainly for legacy PHP systems that still process attacker-supplied archives. Exposure is most likely in unsupported or unpatched PHP 5.4, 5.5, or 5.6 deployments, especially code paths that parse PHAR or tar archives from untrusted sources. The bundle does not identify specific downstream products beyond PHP and vendor package advisories. Treat as a legacy-risk cleanup item unless a business-critical service runs affected PHP and accepts untrusted archives. Prioritize remediation where old PHP remains internet-facing or embedded in appliances. Mitigation focus: Upgrade PHP to 5.4.40, 5.5.24, 5.6.8, or later supported vendor packages.; Apply relevant Red Hat, Apple, Oracle, or PHP vendor security updates.; Restrict untrusted archive ingestion until affected runtimes are patched..

Prepared

Jun 13, 2026, 22:39 UTC (UTC+00:00)

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