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CVE-2026-19125: EthPress <= 2.3.5 - Unauthenticated Authentication Bypass

• Severity: high (CVSS 8.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-23 · updated 2026-09-24
• Weakness: CWE-287

Description

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.

Affected products

• lynn999 EthPress – Web3 Login: through 2.3.5

References

• https://plugins.trac.wordpress.org/browser/ethpress/tags/2.3.5/app/Address.php#L419
• https://plugins.trac.wordpress.org/browser/ethpress/tags/2.3.5/app/Login.php#L46
• https://plugins.trac.wordpress.org/browser/ethpress/tags/2.3.5/app/Login.php#L51
• https://plugins.trac.wordpress.org/browser/ethpress/tags/2.3.5/app/Plugin.php#L75
• https://plugins.trac.wordpress.org/changeset/3683106/ethpress/trunk/app/Login.php
• https://www.wordfence.com/threat-intel/vulnerabilities/id/267acbd7-379c-4930-aa85-3071dfcac5a5?source=cve

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