Simple Captcha With Cloudflare Turnstile Plugin up to 1.42.2 on WordPress Shortcode Parser injection

Summaryinfo

A vulnerability was found in Simple Captcha With Cloudflare Turnstile Plugin up to 1.42.2. It has been rated as critical. This issue affects some unknown processing of the component Shortcode Parser. The manipulation leads to injection. This vulnerability is referenced as CVE-2026-85116. Remote exploitation of the attack is possible. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Simple Captcha With Cloudflare Turnstile Plugin up to 1.42.2 and classified as critical. This issue affects an unknown function of the component Shortcode Parser. The manipulation with an unknown input leads to a injection vulnerability. Using CWE to declare the problem leads to CWE-74. The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

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.

It is possible to read the advisory at wpscan.com. The identification of this vulnerability is CVE-2026-85116 since 09/03/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1055 according to MITRE ATT&CK.

Upgrading to version 1.42.3 eliminates this vulnerability.

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Productinfo

Type

• WordPress Plugin

Name

• Simple Captcha With Cloudflare Turnstile Plugin

Version

• 1.42.0
• 1.42.1
• 1.42.2

CPE 2.3info

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CPE 2.2info

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