CVE-2009-4142

CVE-2009-4142 · MEDIUM Severity

AV:N/AC:M/AU:N/C:N/I:P/A:N

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.

Learn more about our Web Application Penetration Testing UK.