CVE-2011-5257

Classipress < 3.1.5 - Cross-Site Scripting via Twitter and Facebook Widget Parameters

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2011-5257. PoCs published by Paul Loftness.

AI-analyzed exploit summary This exploit demonstrates stored XSS vulnerabilities in WordPress Classipress Theme <= 3.1.4 via the 'facebook_id' and 'twitter_id' POST parameters in user profiles. The PoC provides payloads for different versions, showing how unsanitized input allows JavaScript execution.

Description

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.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Paul Loftness · textwebappsphp
https://www.exploit-db.com/exploits/18053

This exploit demonstrates stored XSS vulnerabilities in WordPress Classipress Theme <= 3.1.4 via the 'facebook_id' and 'twitter_id' POST parameters in user profiles. The PoC provides payloads for different versions, showing how unsanitized input allows JavaScript execution.

Classification
Working Poc 100%
Attack Type
Xss
Complexity
Trivial
Reliability
Reliable
Target: WordPress Classipress Theme <= 3.1.4
Auth required
Prerequisites: Registered user account on the target WordPress site
MITRE ATT&CK
mistral-large-3 · analyzed Feb 16, 2026 Full analysis →

References (4)

Core 4
Core References
Vendor Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/46658
Third Party Advisory, VDB Entry vdb-entry x_refsource_osvdb
http://www.osvdb.org/76712
Exploit exploit x_refsource_exploit-db
http://www.exploit-db.com/exploits/18053

Scores

EPSS 0.0379
EPSS Percentile 88.7%

Details

CWE
CWE-79
Status published
Products (5)
appthemes/classipress 3.0.5.2
appthemes/classipress 3.0.5.3
appthemes/classipress 3.1.3
appthemes/classipress 3.1.5
appthemes/classipress < 3.1.4
Published Feb 12, 2013
Tracked Since Feb 18, 2026