Is DoLogin Security safe? Known vulnerabilities and latest version

The DoLogin Security plugin for WordPress is vulnerable to Authentication Bypass via Insufficient Randomness in all versions up to, and including, 4.3. The vulnerability exists because `dologin\s::rrand()` seeds the Mersenne Twister with `mt_srand((double) microtime() * 1000000)` — discarding the integer-seconds component of `microtime()` and constraining the seed to a range of approximately 10^6 values (~20 bits of entropy) — after which every character of the 32-character magic-link token is drawn sequentially with `mt_rand()`, making the entire token a deterministic function of that seed. Because `Pswdless::try_login()` is registered on the unauthenticated `init` hook, resolves the target account by the auto-increment numeric ID embedded in the `?dologin=<id>.<hash>` parameter, performs the hash comparison using a non-constant-time `!=` operator, and then calls `wp_set_auth_cookie()` directly — never passing through `wp_authenticate()` and therefore never triggering the plugin's own `Auth::_has_login_err()` lockout — an unauthenticated attacker can brute-force the ~10^6-candidate seed space to reconstruct an active passwordless login token and authenticate as any targeted user, including administrators, without a password. Exploitation requires that a valid, unexpired passwordless login link (active for up to 7 days) exists for the target account at the time of the attack, and that the numeric link ID is known or guessable from the auto-increment primary key.

Missing Authorization vulnerability in WPDO DoLogin Security dologin allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects DoLogin Security: from n/a through <= 3.7.1.

The DoLogin Security WordPress plugin before 3.7.1 does not restrict the access of a widget that shows the IPs of failed logins to low privileged users.

The DoLogin Security WordPress plugin before 3.7 does not properly sanitize IP addresses coming from the X-Forwarded-For header, which can be used by attackers to conduct Stored XSS attacks via WordPress' login form.

The DoLogin Security WordPress plugin before 3.7 uses headers such as the X-Forwarded-For to retrieve the IP address of the request, which could lead to IP spoofing.