WPMU DEV Dashboard <= 5.0.1 - Authentication Bypass to Administrator via SSO HMAC Canonicalization Confusion
The WPMU DEV Dashboard plugin for WordPress is vulnerable to Authentication Bypass in all versions up to, and including, 5.0.1. This is due to inconsistent and ambiguous HMAC message construction between the unauthenticated wdpsso_step1 and wdpsso_step2 AJAX actions, where step 1 signs and discloses an unseparated concatenation of the token, state, redirect, and domain values, while step 2 verifies an unseparated concatenation that omits the domain field. This makes it possible for unauthenticated attackers, on sites connected to WPMU DEV with Hub SSO enabled and mapped to an administrator, to obtain a valid HMAC from step 1 and replay it to step 2 by moving the domain value into the redirect field, resulting in an authenticated administrator session.
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| Platforma | Paczka | Podatne wersje | Poprawka w wersji |
|---|---|---|---|
| Wtyczka WordPress | WPMU DEV Dashboard | <= 5.0.1 | 5.0.2 |
Odnośniki
- Wektor CVSS
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H- Słabość (CWE)
CWE-347- Platforma
- WordPress
- Paczka
WPMU DEV Dashboard- Ujawniono
- 27.08.2026
- Aktualizacja
- 11.10.2026 10:22
Źródła i licencje
Wordfence Intelligence - 3d4321c8-15a4-46f5-9b0e-2098a7fcfb5b - Wordfence Intelligence
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Copyright 2012-2026 Defiant Inc.
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Historia podatności: WPMU DEV Dashboard
Wszystkie opisane podatności tej paczki (Wtyczka WordPress), od najnowszej. Widać, czy to jednorazowa wpadka, czy paczka, której trzeba pilnować.
- Wszystkich wpisów
- 2
- Pierwsza → ostatnia
- 08.2026 08.2026
- Bez poprawki
- 0
- Wykorzystywana w atakach
- 0
Rozkład istotności
- Krytyczna 1
- Wysoka 1
Ujawnienia w latach
- 2026: 2
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