CVE-2026-19125: The EthPress – Web3 Login plugin for WordPress

Summary

The EthPress – Web3 Login plugin for WordPress is vulnerable to Authentication Bypass in all versions up to, and including, 2.3.5. This is due to the verify_login() function in app/Login.php containing a missing return statement in the signature verification failure branch — when Signature::verify2() reports a mismatch, the function only assigns a WP_Error to a local variable and continues executing, causing unconditional fall-through to the login block where Address::log_in() calls wp_set_auth_cookie() regardless of whether the submitted signature is valid. This makes it possible for unauthenticated attackers to log in as any WordPress user who has a linked wallet address — including administrators — by submitting that user's public wallet address alongside an arbitrary well-formed signature, enabling full site takeover.

Severity

High (CVSS 8.1), as scored by NVD.

Weakness

• CWE-287

Recommended actions

• Check whether you run or depend on the affected component and version
• Apply the vendor's fix or mitigation from the references below

Source & attribution

This 0xCERT advisory summarises CVE-2026-19125 from the U.S. National Vulnerability Database: https://nvd.nist.gov/vuln/detail/CVE-2026-19125. Details may change; refer to the original source for the authoritative record.