CVE-2012-4000

FCKeditor < 2.6.7 - Cross-Site Scripting via textinputs Array Parameter

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2012-4000. PoCs published by Emilio Pinna.

AI-analyzed exploit summary This is a proof-of-concept for a cross-site scripting (XSS) vulnerability in FCKEditor. It demonstrates how an attacker can inject arbitrary JavaScript code into a vulnerable FCKEditor instance by submitting a maliciously crafted form.

Description

Cross-site scripting (XSS) vulnerability in the print_textinputs_var function in editor/dialog/fck_spellerpages/spellerpages/server-scripts/spellchecker.php in FCKeditor 2.6.7 and earlier allows remote attackers to inject arbitrary web script or HTML via textinputs array parameters.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Emilio Pinna · htmlwebappsphp
https://www.exploit-db.com/exploits/37457

This is a proof-of-concept for a cross-site scripting (XSS) vulnerability in FCKEditor. It demonstrates how an attacker can inject arbitrary JavaScript code into a vulnerable FCKEditor instance by submitting a maliciously crafted form.

Classification
Working Poc 90%
Attack Type
Xss
Complexity
Trivial
Reliability
Reliable
Target: FCKEditor 2.6.7 (and prior versions)
No auth needed
Prerequisites: A vulnerable FCKEditor instance accessible to the attacker
MITRE ATT&CK
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (5)

Core 5
Core References
Third Party Advisory vendor-advisory x_refsource_debian
http://www.debian.org/security/2012/dsa-2522
Vendor Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/49606
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/76604
Exploit vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/54188

Scores

EPSS 0.0425
EPSS Percentile 89.8%

Details

CWE
CWE-79
Status published
Products (37)
ckeditor/fckeditor 0.8 beta
ckeditor/fckeditor 0.8.5 beta
ckeditor/fckeditor 0.9.0 beta
ckeditor/fckeditor 0.9.1 beta
ckeditor/fckeditor 0.9.2 beta
ckeditor/fckeditor 0.9.3 beta
ckeditor/fckeditor 0.9.4 beta
ckeditor/fckeditor 0.9.5 beta
ckeditor/fckeditor 1.0 (3 CPE variants)
ckeditor/fckeditor 1.1
... and 27 more
Published Jul 12, 2012
Tracked Since Feb 18, 2026