Description
The htmlspecialchars function in PHP before 5.2.12 does not properly handle (1) overlong UTF-8 sequences, (2) invalid Shift_JIS sequences, and (3) invalid EUC-JP sequences, which allows remote attackers to conduct cross-site scripting (XSS) attacks by placing a crafted byte sequence before a special character.
Remediation
References
Related Vulnerabilities
SharePoint CVE-2021-28453 Vulnerability (CVE-2021-28453)
Jenkins Observable Differences in Behavior to Error Inputs Vulnerability (CVE-2020-2101)
MySQL Out-of-bounds Write Vulnerability (CVE-2020-15358)
MySQL Improper Initialization Vulnerability (CVE-2020-11655)
WordPress Plugin Campaign URL Builder Cross-Site Request Forgery (1.5.0)