CVE-2008-5761

FlatnuX CMS 2008-12-11 - Cross-Site Scripting via mod foto or name Parameter

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2008-5761. PoCs published by gmda.

AI-analyzed exploit summary This exploit demonstrates a stored XSS vulnerability in Flatnux 3 via unfiltered HTML/JavaScript injection in the file upload form. The PoC steals cookies by embedding a hidden iframe that exfiltrates data to an attacker-controlled server.

Description

Multiple cross-site scripting (XSS) vulnerabilities in FlatnuX CMS (aka Flatnuke3) 2008-12-11 allow remote attackers to inject arbitrary web script or HTML via (1) the mod parameter to the default URI; (2) the foto parameter to photo.php in the 05_Foto module; or (3) the name parameter in an insertrecord action to index.php in the 08_Files module, as demonstrated by injection within a SRC attribute of an IFRAME element.

Exploits (1)

exploitdb WORKING POC VERIFIED
by gmda · textwebappsphp
https://www.exploit-db.com/exploits/7461

This exploit demonstrates a stored XSS vulnerability in Flatnux 3 via unfiltered HTML/JavaScript injection in the file upload form. The PoC steals cookies by embedding a hidden iframe that exfiltrates data to an attacker-controlled server.

Classification
Working Poc 90%
Attack Type
Xss
Complexity
Trivial
Reliability
Reliable
Target: Flatnux 3
Auth required
Prerequisites: Registered user account · Access to the file upload functionality
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (7)

Core 7
Core References
Third Party Advisory third-party-advisory x_refsource_sreason
http://securityreason.com/securityalert/4825
Exploit vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/32828
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/47369
Exploit vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/32826
Vendor Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/33175
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/47367
Exploit, Third Party Advisory exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/7461

Scores

EPSS 0.0174
EPSS Percentile 74.8%

Details

CWE
CWE-79
Status published
Products (1)
flatnux/flatnux 2008-12-11
Published Dec 30, 2008
Tracked Since Feb 18, 2026