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CVE-2009-4142

MEDIUM CVSS: 4.3 Published: 2009-12-21 Modified: 2026-06-16

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.

Affected Platforms

Php Php

Weakness Type

CWE-79

References