CVE-2009-3539

YourFreeWorld Ultra Classifieds Pro - Cross-Site Scripting via cname or sn Parameter

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 2 public exploits for CVE-2009-3539. PoCs published by Moudi.

AI-analyzed exploit summary The exploit demonstrates a reflected XSS vulnerability in Ultra Classifieds Pro by injecting a script tag into the 'cname' parameter of the subclass.php endpoint. The lack of input sanitization allows arbitrary JavaScript execution in the context of the affected site.

Description

Multiple cross-site scripting (XSS) vulnerabilities in YourFreeWorld Ultra Classifieds Pro allow remote attackers to inject arbitrary web script or HTML via the (1) cname parameter to subclass.php and the (2) sn parameter to listads.php.

Exploits (2)

exploitdb WORKING POC VERIFIED
by Moudi · textwebappsphp
https://www.exploit-db.com/exploits/34745

The exploit demonstrates a reflected XSS vulnerability in Ultra Classifieds Pro by injecting a script tag into the 'cname' parameter of the subclass.php endpoint. The lack of input sanitization allows arbitrary JavaScript execution in the context of the affected site.

Classification
Working Poc 90%
Attack Type
Xss
Complexity
Trivial
Reliability
Reliable
Target: Ultra Classifieds Pro
No auth needed
Prerequisites: Access to the vulnerable endpoint · User interaction to trigger the payload
MITRE ATT&CK
devstral-2 · analyzed Feb 18, 2026 Full analysis →
exploitdb WORKING POC VERIFIED
by Moudi · textwebappsphp
https://www.exploit-db.com/exploits/34744

The exploit demonstrates a reflected XSS vulnerability in Ultra Classifieds Pro by injecting a malicious script via the 'sn' parameter in the URL. The payload bypasses basic sanitization using URL encoding and line breaks.

Classification
Working Poc 90%
Attack Type
Xss
Complexity
Trivial
Reliability
Reliable
Target: Ultra Classifieds Pro
No auth needed
Prerequisites: User interaction required to click the crafted URL
MITRE ATT&CK
devstral-2 · analyzed Feb 18, 2026 Full analysis →

References (3)

Core 3
Core References
Vendor Advisory vdb-entry x_refsource_vupen
http://www.vupen.com/english/advisories/2009/1965
Vendor Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/35857

Scores

EPSS 0.0152
EPSS Percentile 71.3%

Details

CWE
CWE-79
Status published
Products (1)
yourfreeworld/ultra_classifieds_pro
Published Oct 02, 2009
Tracked Since Feb 18, 2026