Is CVE-2011-5257 being actively exploited?

CVE-2011-5257 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2011-5257?

CVE-2011-5257 has a CVSS 2.0 base score of 4.3 (MEDIUM).

CVE-2011-5257

MEDIUM · CVSS 4.3EPSS 3.8%EU EUVD

Multiple cross-site scripting (XSS) vulnerabilities in the Classipress theme before 3.1.5 for WordPress allow remote attackers to inject arbitrary web script or HTML via the (1) twitter_id parameter related to the Twitter widget and (2) facebook_id parameter related to the Facebook widget.

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: 3.8% (90th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2011-5156)
Published: February 12, 2013
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2011-5156 in the EU Vulnerability Database. Last updated in EUVD on September 16, 2024.

View on the EU Vulnerability Database

Affected products

appthemes / classipress
appthemes / classipress
appthemes / classipress
appthemes / classipress
appthemes / classipress
wordpress / wordpress

References

http://docs.appthemes.com/classipress/classipress-version-3-1-5/(Vendor Advisory)
http://secunia.com/advisories/46658(Vendor Advisory)
http://www.exploit-db.com/exploits/18053(Exploit)
http://www.osvdb.org/76712

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

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