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cvelistRedhatCVELIST:CVE-2009-4142
HistoryDec 21, 2009 - 4:00 p.m.

CVE-2009-4142

2009-12-2116:00:00
redhat
www.cve.org
4

AI Score

8.5

Confidence

High

EPSS

0.02

Percentile

88.9%

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.