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CVE-2012-20003

MEDIUM 5.1 CVSS 4.0
Published
October 20, 2026
Last modified
October 23, 2026
NVD status
Deferred
Reported by
disclosure@vulncheck.com
Weakness
CWE-79
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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.

Affected WordPress components

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • Web Updates KMU Custom Tables — Before 3.4.6

References

  • github.com https://github.com/projectdiscovery/nuclei-templates/blob/main/http/vulnerabilities/wordpress/wp-custom-tables-xss.yaml
  • wordpress.org https://wordpress.org/plugins/custom-tables/
  • wpscan.com https://wpscan.com/vulnerability/211a4286-4747-4b62-acc3-fd9a57b06252
  • www.acunetix.com https://www.acunetix.com/vulnerabilities/web/wordpress-plugin-custom-tables-key-parameter-cross-site-scripting-3-4-4/
  • www.exploit-db.com https://www.exploit-db.com/exploits/37482
  • www.vulncheck.com https://www.vulncheck.com/advisories/custom-tables-wordpress-plugin-3.4.6-reflected-xss-via-iframe-php
  • nvd.nist.gov Official NVD record