CVE-2026-93900 json
Simple CAPTCHA with Cloudflare Turnstile <= 1.44.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes
published 2026-11-04 5 d ago modified 2026-11-04 4 d ago also EUVD-2026-116805
- cvss
- 6.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 26%
- public exploits
- 0
- none known
Summary
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.
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 4 d ago
Exploit prediction
0.33% chance of exploitation in the next 30 days, higher than 26% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N |
Affected products
- elliotvs Simple CAPTCHA with Cloudflare Turnstile
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/056a6984-4753-4f52-87b0-1a3cc2f5bde2?source=cve
- plugins.trac.wordpress.org /browser/simple-cloudflare-turnstile/tags/1.43.1/inc/integrations/forms/gravity-forms.php#L22
- plugins.trac.wordpress.org /browser/simple-cloudflare-turnstile/tags/1.43.1/inc/integrations/forms/gravity-forms.php#L13
- plugins.trac.wordpress.org /browser/simple-cloudflare-turnstile/tags/1.41.0/inc/integrations/forms/gravity-forms.php#L22
- plugins.trac.wordpress.org /browser/simple-cloudflare-turnstile/tags/1.41.0/inc/integrations/forms/gravity-forms.php#L13
- plugins.trac.wordpress.org /browser/simple-cloudflare-turnstile/
- plugins.trac.wordpress.org /changeset/3776057/simple-cloudflare-turnstile/trunk/inc/integrations/forms/gravity-forms.php
Sources
- CVE List CVE-2026-93900
- NVD CVE-2026-93900
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.