CVE-2026-18547

The Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Textarea Profile Field with HTML Support (DOM Gadget via id Attribute) in all versions up to, and including, 2.12.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This is possible because the wp_kses 'templates' allowlist permits the id attribute on div elements but does not neutralize unescaped quotes within its value; when pickadate.js concatenates the stored id value into an HTML string via jQuery .html() on profile page load, the smuggled onfocus and autofocus attribute syntax breaks out of attribute context and executes as JavaScript.

• CWE-79

• https://plugins.trac.wordpress.org/browser/ultimate-member/tags/2.11.4/assets/js/common.js#L51
• https://plugins.trac.wordpress.org/browser/ultimate-member/tags/2.11.4/includes/class-functions.php#L580
• https://plugins.trac.wordpress.org/browser/ultimate-member/tags/2.11.4/includes/core/class-form.php#L853
• https://plugins.trac.wordpress.org/browser/ultimate-member/tags/2.12.1/assets/js/common.js#L51
• https://plugins.trac.wordpress.org/browser/ultimate-member/tags/2.12.1/includes/class-functions.php#L580
• https://plugins.trac.wordpress.org/browser/ultimate-member/tags/2.12.1/includes/core/class-form.php#L853
• https://plugins.trac.wordpress.org/changeset?reponame=&old=3663931%40ultimate-member&new=3663931%40ultimate-member
• https://www.wordfence.com/threat-intel/vulnerabilities/id/a7961bcc-eae7-40e1-8838-9755c7655500?source=cve

Published

Aug 25, 2026

Last Modified

Sep 28, 2026

Status

Deferred

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2026-1854The Post Flagger plugin for WordPress is vulnerable to Store…6.4
• CVE-2026-18540undici's retry interceptor can append the body of a ranged r…3.7
• CVE-2026-18541IBM Planning Analytics 2.0, and 2.1 is vulnerable to stored …5.4
• CVE-2026-18544IBM Portieris 0.5.0 through 0.14.2 could allow a remote auth…8.1
• CVE-2026-18545IBM Langflow OSS 1.0.0 through 1.11.1 is vulnerable to serve…4.3
• CVE-2026-18546IBM CockroachDB PostgreSQL for IBM VPC 26.2.0 through 26.2.3…5.4
• CVE-2026-18548The Groundhogg — CRM, Newsletters, and Marketing Automation …7.2
• CVE-2026-18549@fastify/multipart is a multipart form-data parser for Fasti…7.5
• CVE-2026-18550The Nokri - Job Board WordPress Theme for WordPress is vulne…9.8
• CVE-2026-18551Mattermost versions 11.10.x <= 11.10.0, 11.7.x <= 11.7.9, 11…6.5
• CVE-2026-18554IBM Db2 Mirror for i 7.4, 7.5, and 7.6 could allow a remote …7.5
• CVE-2026-18555The Better Messages – Chat Rooms, Group Chat, Private Messag…6.1