CVE-2026-12255

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.

CVSS v3.1

8.1 HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

0.27% chance of exploitation in the next 30 days, 19th percentile

Published

2026-07-27

Proof-of-concept exploits (1)

• https://wpscan.com/vulnerability/6ecd37bf-f48a-4f7f-8a93-e7f0475371af/

References

• CVE Record
• NVD entry

Related

• CVE-2026-12251
• CVE-2026-12270
• CVE-2026-12223
• CVE-2026-12271
• CVE-2026-12222
• CVE-2026-12273