EUVD-2026-76039
GHSA-95g7-wvmm-h2hh
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Network-reachable via public form with no auth or interaction; scope unchanged and impact capped at low C/I because impact depends on registered shortcodes.
Primary rating from Vendor (wpscan).
CVSS VectorVendor: wpscan
Lifecycle Timeline
3DescriptionCVE.org
The Simple CAPTCHA with Cloudflare Turnstile WordPress plugin from 1.2.2 before 1.42.3 runs the shortcode parser over the whole rendered Contact Form 7 form, including the values a visitor submitted, allowing unauthenticated users to execute arbitrary shortcodes registered on the site.
AnalysisAI
Unauthenticated shortcode injection in the Simple CAPTCHA with Cloudflare Turnstile WordPress plugin (versions 1.2.2 through 1.42.2) allows any visitor to execute arbitrary WordPress shortcodes registered on the site. The plugin incorrectly passes the entire rendered Contact Form 7 output - including raw visitor-supplied field values - through the WordPress shortcode parser before returning the response. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires: (1) the Simple CAPTCHA with Cloudflare Turnstile plugin installed and active at a vulnerable version (1.2.2-1.42.2); (2) Contact Form 7 installed and at least one form rendered on a publicly accessible page using this plugin's integration; (3) a publicly reachable form submission endpoint - no authentication is required from the attacker. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 base score of 6.5 with AV:N/AC:L/PR:N/UI:N reflects the ease of reach - any internet visitor can submit a form - while the S:U/C:L/I:L metrics appropriately cap the baseline impact. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Update the Simple CAPTCHA with Cloudflare Turnstile plugin to version 1.42.3 or later, which removes the unsafe application of do_shortcode() to visitor-submitted form values. … Detailed patch versions, workarounds, and compensating controls in full report. |
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