Hoch

DoLogin Security <= 4.3 - Unauthenticated Authentication Bypass via Insufficient Randomness via 'dologin' Parameter Weak PRNG Token

  • Veröffentlicht: 07.07.2026
  • Aktualisiert: 11.10.2026 10:22

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.

Betroffene Software

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PlattformPaketAnfällige VersionenBehoben in
WordPress-Plugin DoLogin Security <= 4.3 4.4

Verweise

CVSS-Wert 8.8/10
CVSS-Vektor
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Schwäche (CWE)
CWE-338
Plattform
WordPress
Paket
DoLogin Security
Veröffentlicht
07.07.2026
Aktualisiert
11.10.2026 10:22

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Schwachstellenhistorie: DoLogin Security

Alle veröffentlichten Schwachstellen dieses Pakets (WordPress-Plugin), neueste zuerst. Zeigt, ob es ein einmaliger Ausrutscher ist oder ein Paket, das man im Auge behalten muss.

Einträge insgesamt
5
Erste → letzte
08.2023 07.2026
Ohne Fix
0
In Angriffen ausgenutzt
0

Verteilung nach Schweregrad

  • Hoch 2
  • Mittel 3

Veröffentlichungen pro Jahr

  1. 2023: 4
  2. 2024: 0
  3. 2025: 0
  4. 2026: 1
  1. DoLogin Security <= 4.3 - Unauthenticated Authentication Bypass via Insufficient Randomness via 'dologin' Parameter Weak PRNG Token dieser Eintrag
    Hoch · 8.8 CVE-2026-14495 <= 4.3 4.4
  2. Mittel · 5.3 CVE-2023-4631 < 3.7 3.7

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