Reflected Cross-Site Scripting in Custom Tables Plugin for WordPress
CVE-2012-20003

5.1MEDIUM

Key Information:

Vendor

WordPress
Status
Custom Tables
Vendor
CVE Published:
20 October 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2012-20003?

The Custom Tables plugin for WordPress prior to version 3.4.6 is susceptible to a reflected cross-site scripting vulnerability. This vulnerability allows unauthenticated attackers to inject arbitrary scripts via the unsanitized 'key' parameter in the iframe.php file. By crafting GET requests that include a malicious key value, attackers can execute scripts in the context of other users’ browsers, potentially leading to cookie theft or session hijacking. The exploitation example was first reported by Shadowserver Foundation on October 20, 2023, underscoring the urgency of addressing this security flaw.

Affected Version(s)

Custom Tables 0 < 3.4.6

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-2012-20003 - Proof of Concept

References

https://www.exploit-db.com/exploits/37482
exploit
https://wpscan.com/vulnerability/211a4286-4747-4b62-acc3-...
third-party-advisory
https://www.acunetix.com/vulnerabilities/web/wordpress-pl...
third-party-advisory

CVSS V4

Score:
5.1
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Sammy FORGIT
The Shadowserver Foundation
.