CVE Catalog

CVE-2026-119096

CriticalCVSS 9.8
Published: Translated: NVD NIST

Summary

The Uncanny Toolkit for LearnDash plugin for WordPress (up to 3.8.2) is vulnerable to Authentication Bypass via the 'email' parameter in uo_login_action(). A parser-differential flaw allows skipping account verification by using a raw string for lookup and a sanitized string for login. This lets unauthenticated attackers log in to unverified or suspended accounts if they know the credentials.

Risk Assessment

An attacker can obtain a valid session for an administrative or other privileged account that is unverified or suspended, bypassing the plugin's account approval and suspension controls. This poses a serious risk to site security.

Recommendation

Update the plugin to a version later than 3.8.2 that fixes this vulnerability. Until then, consider disabling the plugin or restricting access to the login endpoint.

Related vulnerabilities

Original NVD description (English source)

The Uncanny Toolkit for LearnDash plugin for WordPress is vulnerable to Authentication Bypass in versions up to, and including, 3.8.2 via the `email` parameter of the `uo_login_action()` function. This is due to a parser-differential flaw in which the plugin's account-verification gate resolves the submitted `email` value using the raw, unsanitized string passed to `get_user_by()`, while the subsequent `wp_signon()` call relies on WordPress core's internal `sanitize_user()` to strip appended junk characters — causing the gate lookup to fail and be skipped entirely while the real account is still resolved and authenticated. This makes it possible for unauthenticated attackers to log in to unverified or administrator-suspended accounts whose credentials they already possess, obtaining a valid `wordpress_logged_in` session cookie and defeating the plugin's account-approval and account-suspension controls. The nonce required to reach the handler is freely obtainable in the same request from the unauthenticated `ult-refresh-nonce` endpoint, making exploitation trivial for any attacker with network access to the site and knowledge of a target account's credentials.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS