Local File Inclusion Vulnerability in Broadstreet Ad Widget for WordPress
CVE-2017-20289

7.7HIGH

Key Information:

Vendor: WordPress
Status: Ad Widget
Vendor: CVE Published:; 22 October 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2017-20289?

The Broadstreet Ad Widget plugin for WordPress has a local file inclusion (LFI) vulnerability that affects versions up to 2.12.0. Authenticated users can exploit this flaw by supplying unsanitized input to the 'step' parameter in views/modal/index.php, allowing them to execute attacker-specified PHP files. By using directory traversal sequences, along with an optional null byte, attackers can gain access to sensitive files on the server and execute arbitrary PHP code. This vulnerability poses significant risks to the security of WordPress installations utilizing this plugin.

Affected Version(s)

Ad Widget 2.2.0 < 2.12.0

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2017-20289 - Proof of Concept