CVE-2026-18786 CheckView < 2.3.2 - Administrator Account Creation via REST API Authentication Bypass
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-18786?
CVE-2026-18786 is a high-severity vulnerability in Unknown CheckView, published on 10 Aug 2026.
Official description
The CheckView WordPress plugin before 2.3.2 does not restrict its REST API authentication filter to its own routes and unconditionally discards the authentication error raised for any request whose URI merely contains a CheckView WordPress plugin before 2.3.2-specific string, making it possible for unauthenticated attackers to bypass the REST nonce check and perform any REST action available to a logged-in administrator, such as creating a new administrator account, via a crafted link an administrator is tricked into opening.
Weakness: CWE-287
Which versions are affected by CVE-2026-18786?
How do I fix CVE-2026-18786?
No fix has been published for CVE-2026-18786 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-18786 being exploited?
There is no known exploitation of CVE-2026-18786 in the wild and no public exploit code.
Sources
Also known as GHSA-8r6g-r9rq-8jr8.