Description
zend_hash_del_key_or_index in zend_hash.c in PHP before 4.4.3 and 5.x before 5.1.3 can cause zend_hash_del to delete the wrong element, which prevents a variable from being unset even when the PHP unset function is called, which might cause the variable's value to be used in security-relevant operations.
Remediation
References
Related Vulnerabilities
PHP Improper Control of Generation of Code ('Code Injection') Vulnerability (CVE-2006-4812)
Python Integer Overflow or Wraparound Vulnerability (CVE-2010-1449)
XWiki URL Redirection to Untrusted Site ('Open Redirect') Vulnerability (CVE-2023-29204)