Vulnerability Details : 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.
Published 2009-12-21 16:30:00
Updated 2018-10-30 16:26:21
Source Red Hat, Inc.
View at NVD,   CVE.org
Vulnerability category: Cross site scripting (XSS)

Products affected by CVE-2009-4142

Threat overview for CVE-2009-4142

Top countries where our scanners detected CVE-2009-4142
Top open port discovered on systems with this issue 80
IPs affected by CVE-2009-4142 47,570
Threat actors abusing to this issue? Yes
Find out if you* are affected by CVE-2009-4142!
*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2009-4142

EPSS FAQ
2.00%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 87 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2009-4142

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
4.3
 MEDIUM AV:N/AC:M/Au:N/C:N/I:P/A:N
8.6
2.9
 NIST

CWE ids for CVE-2009-4142

References for CVE-2009-4142

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