CVE-2012-20003
Medium
Description
Custom Tables plugin for WordPress before 3.4.6 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject scripts through the unsanitized 'key' parameter in iframe.php. Attackers can craft GET requests to /wp-content/plugins/custom-tables/iframe.php with s=1 and a malicious key value to execute script in victims' browsers and steal cookies. Exploitation evidence was first observed by the Shadowserver Foundation on 2023-10-20.
SeverityMedium
CVSS6.1
Exploit probability—
ProductCustom Tables
PublishedOct 20, 2026
First seenOct 20, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- Web Updates KMU Custom Tables3.4.6 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Web Updates KMU Custom Tables | v < 3.4.6 | 3.4.6 |
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