Is CVE-2009-4157 being actively exploited?

CVE-2009-4157 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2009-4157?

CVE-2009-4157 has a CVSS 2.0 base score of 4.3 (MEDIUM).

CVE-2009-4157

MEDIUM · CVSS 4.3EPSS 1.3%EU EUVD

Multiple cross-site scripting (XSS) vulnerabilities in index.php in the ProofReader (com_proofreader) component 1.0 RC9 and earlier for Joomla! allow remote attackers to inject arbitrary web script or HTML via the URI, which is not properly handled in (1) 404 or (2) error pages.

Key facts

CVSS score: 4.3 (v2.0)
Severity: MEDIUM
CVSS vector: AV:N/AC:M/Au:N/C:N/I:P/A:N
Weakness (CWE): CWE-79
EPSS score: 1.3% (71th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2009-4127)
Published: December 2, 2009
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2009-4127 in the EU Vulnerability Database. Last updated in EUVD on September 16, 2024.

View on the EU Vulnerability Database

Affected products

joomla / joomla!
joomlatune / com proofreader
joomlatune / com proofreader

References

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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