CVE-2012-20003 (GCVE-0-2012-20003)

Vulnerability from cvelistv5 – Published: 2026-10-20 20:31 – Updated: 2026-10-20 20:31 X_Known Exploited Vulnerability Unsupported When Assigned
VLAI Previdian
Title
Custom Tables WordPress Plugin < 3.4.6 Reflected XSS via iframe.php
Summary
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.
Severity
5.1 (Medium)
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
6.1 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6657 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Web Updates KMU Custom Tables Affected: 0 , < 3.4.6 (semver)
guessed Create a notification for this product.
Date Public
2012-07-03 00:00
Credits
Sammy FORGIT The Shadowserver Foundation
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 3e5942e9-d293-4815-97f7-0879de70421c

Vulnerability ID: CVE-2012-20003

Status: Confirmed

Status Updated: 2026-10-20 20:40 UTC

Exploited: Yes

Timestamps
First Seen: 2026-10-20
Asserted: 2026-10-20
Scope
Notes: Custom Tables WordPress Plugin < 3.4.6 Reflected XSS via iframe.php | Affected: Web Updates KMU / Custom Tables | CVSS: 5.1 (MEDIUM) | Used in malware: unknown | Not yet in CISA KEV: True
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: previdian

Details
Feed Previdian (previdian.com)
Title Custom Tables WordPress Plugin < 3.4.6 Reflected XSS via iframe.php
Cve Id CVE-2012-20003
Vendor Web Updates KMU
Ghsa Id None
Product Custom Tables
Added Date 2026-10-20T20:40:21.261Z
Cvss Score 5.1
Epss Score None
Previous Ids
Cvss Severity MEDIUM
Virtual Patch False
Cvss Estimated False
Epss Percentile None
Used In Malware unknown
Vulnerability Id CVE-2012-20003
Ahead Of Cisa Kev None
Not Yet In Cisa Kev True
References
Created: 2026-10-21 21:00 UTC | Updated: 2026-10-21 21:00 UTC
Show details on NVD website
To clipboard 

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}



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