CVE-2003-1131

KnowledgeBuilder index.php - Remote File Inclusion Code Execution

Title source: manual
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2003-1131. PoCs published by Zero X.

AI-analyzed exploit summary This is a writeup describing a remote file inclusion vulnerability in KnowledgeBuilder. The vulnerability allows an attacker to include and execute arbitrary PHP scripts from a remote server by manipulating the 'page' parameter in the URL.

Description

PHP remote file inclusion vulnerability in index.php in KnowledgeBuilder, referred to as KnowledgeBase, allows remote attackers to execute arbitrary PHP code by modifying the page parameter to reference a URL on a remote web server that contains the code.

Exploits (1)

exploitdb WRITEUP VERIFIED
by Zero X · textwebappsphp
https://www.exploit-db.com/exploits/23476

This is a writeup describing a remote file inclusion vulnerability in KnowledgeBuilder. The vulnerability allows an attacker to include and execute arbitrary PHP scripts from a remote server by manipulating the 'page' parameter in the URL.

Classification
Writeup 90%
Attack Type
Rce
Complexity
Trivial
Reliability
Theoretical
Target: KnowledgeBuilder (version not specified)
No auth needed
Prerequisites: A vulnerable version of KnowledgeBuilder · Ability to send HTTP requests to the target server
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (6)

Core 6
Core References
Vendor Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/10504
Mailing List mailing-list x_refsource_bugtraq
http://marc.info/?l=bugtraq&m=111066494323543&w=2
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/14078
Exploit mailing-list x_refsource_bugtraq
http://www.securityfocus.com/archive/1/348359
Exploit, Patch vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/9292
Third Party Advisory, VDB Entry vdb-entry x_refsource_osvdb
http://www.osvdb.org/3228

Scores

EPSS 0.0343
EPSS Percentile 87.4%

Details

Status published
Products (4)
activecampaign/knowledgebuilder 2.0.1
activecampaign/knowledgebuilder 2.1.0
activecampaign/knowledgebuilder 2.1.4
activecampaign/knowledgebuilder 3.0.1
Published Dec 31, 2003
Tracked Since Feb 18, 2026