CVE-2026-18409 (GCVE-0-2026-18409)

Vulnerability from cvelistv5 – Published: 2026-08-21 03:37 – Updated: 2026-08-21 15:26
VLAI
Title
WPForms Pro <= 2.0.0.2 - Unauthenticated Stored Cross-Site Scripting via Single Line Text and Paragraph Text Field Values
Summary
The WPForms Pro plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Single Line Text and Paragraph Text Field Values in all versions up to, and including, 2.0.0.2 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The exploit relies on the plugin's own wp_kses_allowed_html filter widening the 'post' allowlist to permit iframe elements with a data-src attribute, which is not on WordPress's URI-attribute sanitization list, allowing a javascript: URI stored in data-src to survive kses processing and subsequently be promoted to a live src attribute by the bundled admin script view-entry.min.js.
Severity
7.2 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-21 15:24 UTC
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
Wordfence CNA under the mitre root
CNA scorecard C 65/100 over 2254 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
WPForms WPForms Pro Affected: 0 , ≤ 2.0.0.2 (semver)
guessed Create a notification for this product.
Credits
daroo
Show details on NVD website
To clipboard 

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