Description
Integer overflow in the php_escape_html_entities_ex function in ext/standard/html.c in PHP before 5.5.36 and 5.6.x before 5.6.22 allows remote attackers to cause a denial of service or possibly have unspecified other impact by triggering a large output string from a FILTER_SANITIZE_FULL_SPECIAL_CHARS filter_var call. NOTE: this vulnerability exists because of an incomplete fix for CVE-2016-5094.
Remediation
References
Related Vulnerabilities
WordPress Plugin Relevanssi-A Better Search Cross-Site Scripting (4.0.4)
Magento Improper Input Validation Vulnerability (CVE-2021-28585)
WordPress Plugin Under Construction, Coming Soon & Maintenance Mode Multiple Vulnerabilities (1.1.1)
SugarCRM Improper Control of Generation of Code ('Code Injection') Vulnerability (CVE-2019-17307)
WordPress Plugin Add Any Extension to Pages Cross-Site Scripting (1.3)