WordPressプラグイン「EthPress – Web3 Login」に不適切な認証の脆弱性（CVE-2026-19125）
概要
WordPressプラグイン「EthPress – Web3 Login」に不適切な認証の脆弱性が確認されました。
バージョン 2.3.5 以前に影響があります。
修正版 2.3.6 への更新が推奨されます。
脆弱性の基本情報
| 脆弱性ID |
CVE-2026-19125 WF-267acbd7-379c-4930-aa85-3071dfcac5a5 |
|---|---|
| 脆弱性の種類 | 不適切な認証 |
| 危険度 | 高 |
| CVSSスコア |
8.1（CVSS v3.1） CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
| 公開日 | 2026年9月23日 |
影響を受ける製品
| 製品 | 影響を受けるバージョン | 修正版 | 出典 |
|---|---|---|---|
| WordPressプラグイン「EthPress – Web3 Login」 |
2.3.5 以前 | 2.3.6 | Wordfence Intelligence |
推奨対応
- WordPressプラグイン「EthPress – Web3 Login」を修正版 2.3.6 またはそれ以降の公式最新版へ更新してください。
情報元の原文
Wordfence Intelligence
EthPress <= 2.3.5 - Unauthenticated Authentication Bypass
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.
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