CVE-2011-1468: Multiple memory leaks in the OpenSSL extension in PHP before 5.3.6 might allow remote attackers to cause a...

Security readout for executives and security teams

This is an old PHP OpenSSL extension flaw where certain encryption or decryption operations can leak memory. If exposed through application functionality, repeated remote requests could consume server memory and cause service disruption. The sources do not report data theft or code execution. Exposure is most likely in legacy systems running PHP before 5.3.6 with the OpenSSL extension, especially applications that process remote-controlled encryption or decryption inputs. Modern supported PHP deployments are unlikely to be affected. Treat this as legacy-risk cleanup. It is not flagged as actively exploited in the bundle, but affected internet-facing PHP applications could suffer availability loss. Prioritize if old PHP remains in production. Mitigation focus: Inventory PHP runtimes and flag any PHP versions earlier than 5.3.6.; Apply vendor-supported PHP updates; use PHP 5.3.6 or later where applicable.; Prioritize internet-facing PHP applications using the OpenSSL extension..

Prepared

Jun 24, 2026, 13:28 UTC (UTC+00:00)

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