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.
References6
- plugins.trac.wordpress.org/browser/ethpress/tags/2.3.5/app/Addr…
- plugins.trac.wordpress.org/browser/ethpress/tags/2.3.5/app/Logi…
- plugins.trac.wordpress.org/browser/ethpress/tags/2.3.5/app/Logi…
- plugins.trac.wordpress.org/browser/ethpress/tags/2.3.5/app/Plug…
- plugins.trac.wordpress.org/changeset/3683106/ethpress/trunk/app…
- www.wordfence.com/threat-intel/vulnerabilities/id/267acbd7-379c…
Metrics
- CVSS 3.1
-
8.1
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 1% percentile: 53 · as of 9 November 2026
- CWE
- CWE-287
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.