CVE-2026-103646: Ultimate Multisite, заобикаляне на вход и права

Описание

Оригинално описание

The Ultimate Multisite WordPress plugin before 2.17.0 does not require authentication before a logged-out checkout is linked to, and logged in as, an existing WordPress account matching the submitted email address, and its duplicate-account check normalizes that address differently from the lookup used to create the customer, so an unauthenticated attacker can log in as any existing user, including a Network Super Admin, whose email address they know. This bypass is not addressed by the 2.15.1 fix for CVE-2026-75957 and remains exploitable in all versions up to and including 2.16.1, the releases that fix was expected to cover. Exploitation requires a checkout form configured without a password field (auto-generated password) and a target account that has no existing customer record in the Ultimate Multisite WordPress plugin before 2.17.0.

Засегнати продукти

• Unknown Ultimate Multisite: преди 2.17.0

Вид слабост

• CWE-287 Неправилна автентикация

История

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-103646
• https://nvd.nist.gov/vuln/detail/CVE-2026-103646
• https://wpscan.com/vulnerability/a05da0ad-5d92-406f-b182-b3ed1f8389f3/