CVE-2026-19125 EthPress <= 2.3.5 - Unauthenticated Authentication Bypass
Unauthenticated attackers can bypass authentication and log in as any user, including administrators, by submitting a valid wallet address with an arbitrary signature.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-19125?
CVE-2026-19125 is a high-severity authentication bypass vulnerability in lynn999 EthPress – Web3 Login, published on 23 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-287
Which versions are affected by CVE-2026-19125?
How do I fix CVE-2026-19125?
No fix has been published for CVE-2026-19125 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-19125 being exploited?
There is no known exploitation of CVE-2026-19125 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-j4cg-29jc-q96r.