Medium 6.1Published Oct 20, 2026

CVE-2012-20003Custom Tables WordPress Plugin < 3.4.6 Reflected XSS via iframe.php

Updated under an hour ago (2026-10-21 14:23 UTC)

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It affects Web Updates KMU Custom Tables. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for Web Updates KMU Custom Tables

Exploited in the last 30 days

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.

CVSS: 6.1 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness (CWE): CWE-79
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Received
Record last updated: Oct 20, 2026
First seen by InfoSec Signals: Oct 20, 2026

Affected products

Affected products

Web Updates KMU Custom Tables web_updates_kmu:custom_tables (from the name)	before 3.4.6	CNA record

References

https://www.exploit-db.com/exploits/37482exploit
https://wpscan.com/vulnerability/211a4286-4747-4b62-acc3-fd9a57b06252third-party-advisory
https://www.acunetix.com/vulnerabilities/web/wordpress-plugin-custom-tables-key-parameter-cross-site-scripting-3-4-4/third-party-advisory
https://github.com/projectdiscovery/nuclei-templates/blob/main/http/vulnerabilities/wordpress/wp-custom-tables-xss.yamltechnical-description
https://wordpress.org/plugins/custom-tables/product
https://www.vulncheck.com/advisories/custom-tables-wordpress-plugin-3.4.6-reflected-xss-via-iframe-phpthird-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.