Stored XSS in Simple CAPTCHA with Cloudflare Turnstile plugin
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
The Simple CAPTCHA with Cloudflare Turnstile plugin for WordPress, in versions up to and including 1.44.3, is affected. The 'id' attribute of the [gravity-simple-turnstile] shortcode is emitted into JavaScript without adequate escaping, which is improper neutralization of input during web page generation (CWE-79). An authenticated attacker with contributor-level access or higher can store arbitrary web scripts in pages that run when a user visits an injected page.
Written with Claude Haiku 5.5 from the sources below · 2026-11-04
Description from the CNA
The Simple CAPTCHA with Cloudflare Turnstile plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'id' attribute of the [gravity-simple-turnstile] shortcode in versions up to, and including, 1.44.3 This is due to insufficient input sanitization and output escaping on the shortcode attribute in the cfturnstile_gravity_shortcode() function: the value is filtered only by esc_html() and sanitize_text_field() (neither of which touches parentheses or dots) and then emitted via esc_js() in a raw JavaScript expression context outside any string literal (esc_js only escapes quotes, backslashes, and newlines). This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
The sources list no fixed version for Simple CAPTCHA with Cloudflare Turnstile.
Written with Claude Haiku 5.5 from the sources below · 2026-11-04
Timeline
- 2026-11-04 Threatist record created from CVE-2026-93900
- 2026-11-04 Alias added: GHSA-2vrq-rcwg-5982
- 2026-11-04 CISA SSVC decision points changed
- 2026-11-04 Priority changed: MEDIUM → LOW
References
Other 7
- https://www.wordfence.com/threat-intel/vulnerabilities/id/056a6984-4753-4f52-87b0-1a3cc2f5bde2?source=cve
- https://plugins.trac.wordpress.org/browser/simple-cloudflare-turnstile/tags/1.43.1/inc/integrations/forms/gravity-forms.php#L22
- https://plugins.trac.wordpress.org/browser/simple-cloudflare-turnstile/tags/1.43.1/inc/integrations/forms/gravity-forms.php#L13
- https://plugins.trac.wordpress.org/browser/simple-cloudflare-turnstile/tags/1.41.0/inc/integrations/forms/gravity-forms.php#L22
- https://plugins.trac.wordpress.org/browser/simple-cloudflare-turnstile/tags/1.41.0/inc/integrations/forms/gravity-forms.php#L13
- https://plugins.trac.wordpress.org/browser/simple-cloudflare-turnstile/
- https://plugins.trac.wordpress.org/changeset/3776057/simple-cloudflare-turnstile/trunk/inc/integrations/forms/gravity-forms.php
More elliotvs vulnerabilities
- TI-2024-11524 Code injection in elliotvs Coupon Affiliates – Affiliate Plugin for WooCommerce CVSS 3.1MEDIUM 6.5
- TI-2025-03165 Cross-site scripting in elliotvs Coupon Affiliates – Affiliate Plugin for WooCommerce CVSS 3.1MEDIUM 6.1
- TI-2022-04562 Freemius SDK <= 2.4.2 - Missing Authorization Checks CVSS 3.1MEDIUM 6.3
- TI-2024-12404 Freemius <= 2.10.1 - Reflected DOM-Based Cross-Site Scripting via url Parameter CVSS 3.1MEDIUM 6.1
Sources
- CVE-2026-93900 · CVE Program
- CVE-2026-93900 · NVD
- FIRST EPSS
- GHSA-2vrq-rcwg-5982 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences