CVE-2009-4142

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.

CVSS v2.0

4.3 MEDIUMAV:N/AC:M/Au:N/C:N/I:P/A:N

EPSS

6.50% chance of exploitation in the next 30 days, 93th percentile

Published

2009-12-21

Updated

2024-08-07

ExploitDB entries (2)

• https://www.exploit-db.com/exploits/33415
• https://www.exploit-db.com/exploits/33414

References

• CVE Record
• NVD entry

Related

• CVE-2009-4141
• CVE-2009-4146
• CVE-2009-4140
• CVE-2009-4147
• CVE-2009-4137
• CVE-2009-4148