CVE-2026-19855

MediumCVSS 6.5/10Last modified Sep 9, 2026

Description

The CleanTalk WordPress plugin before 6.87 does not prevent unauthenticated, user-supplied comment content from being passed to WordPress's shortcode engine, allowing any visitor to have arbitrary shortcodes registered on the site executed server-side and rendered to every subsequent visitor of the page.

Metrics

CVSS 3.1 6.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Weakness enumeration

CWE-74

Affected software

No affected versions have been published.

Timeline

Published: Sep 9, 2026
Last modified: Sep 9, 2026
NVD status: Deferred

Related CVEs from 2026

CVE-2026-198566.5The All in One SEO WordPress plugin before 5.0.2.1 does not correctly determine which shortcodes are present in content derived from user in CVE-2026-198574.8The Formidable Forms WordPress plugin before 6.35 does not prevent a request-derived value from reaching the WordPress shortcode parser when CVE-2026-198587.5The JetFormBuilder — Dynamic Blocks Form Builder WordPress plugin before 3.6.5.2 does not perform authorisation checks when resolving reques CVE-2026-198596.5The JetFormBuilder WordPress plugin before 3.6.5.2 does not sanitize a request parameter before rendering it as message content, allowing un CVE-2026-19866.1The FloristPress for Woo – Customize your eCommerce store for your Florist plugin for WordPress is vulnerable to Reflected Cross-Site Script CVE-2026-198605.5The JetFormBuilder — Dynamic Blocks Form Builder WordPress plugin before 3.6.5.3 does not sufficiently restrict which PHP functions can be u CVE-2026-198614.7The JetFormBuilder — Dynamic Blocks Form Builder WordPress plugin before 3.6.5.2 does not properly sanitise and escape a form field's value CVE-2026-198624.8The JetFormBuilder WordPress plugin before 3.6.5.2 does not validate or strip line breaks from address values it sources from submitted form CVE-2026-198639.3An unauthenticated client may access certain protected resources when using EthereumAuthenticator if the request path contains the configure CVE-2026-198645.6Eclipse Jetty's `SessionAuthentication` retains authentication credentials in a serializable object. When the credentials contain a plaintex CVE-2026-198674.3Mattermost versions 11.10.x <= 11.10.0, 11.9.x <= 11.9.1, 11.8.x <= 11.8.5, 11.7.x <= 11.7.10 fail to cap the number and size of mention key CVE-2026-198697.6@neo4j/graphql from 5.2.0 until the patched versions fails to enforce field-level @authentication rules on root custom-resolver fields when