What’s Vulnerable › Vulnerabilities
CVE-2026-12255: MainWP Child < 6.1.2 - Unauthenticated Administrator Authentication Bypass via Passwordless Site Registration
- Severity: high (CVSS 8.1 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.5% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-07-27 · updated 2026-07-27
- Weakness: CWE-287
Description
The MainWP Child WordPress plugin before 6.1.2 does not verify the requester's identity in its site-registration request handler when password authentication has been disabled for the targeted account, allowing an unauthenticated attacker to obtain a valid authentication session as that account, including an administrator, by naming its login in a single registration request.
Affected products
- MainWP Child: before 6.1.2 — fixed in 6.1.2
How to fix
Upgrade to a fixed version: MainWP Child 6.1.2. Check the vendor advisory for mitigations.
References
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