REST API Authentication Flaw in CheckView Plugin for WordPress
CVE-2026-18786
Key Information:
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What is CVE-2026-18786?
The CheckView WordPress plugin contains a vulnerability that allows unauthenticated attackers to exploit the REST API due to improper handling of authentication filters. This flaw leads to the potential bypass of security mechanisms, allowing attackers to perform various actions typically reserved for logged-in administrators. For instance, by crafting a specific link, they can trick an administrator into executing an action that could elevate their privileges, such as creating new administrator accounts. This vulnerability emphasizes the importance of robust API security measures in WordPress plugin development.
Affected Version(s)
CheckView 2.0.29 < 2.3.2
Exploit Proof of Concept (PoC)
PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.