CVE-2026-75860: JSON Options <= 0.0.4 - Unauthenticated Arbitrary Options Update
The JSON Options WordPress plugin through 0.0.4 does not have any capability check or nonce verification on one of its actions, which runs on every request and is available to unauthenticated users, allowing them to update arbitrary WordPress options. This can be leveraged to enable user registration and set the default role to administrator, leading to privilege escalation and full site takeover.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
WordPress JSON Options pluginto a version that resolves this vulnerability.Fixed in 0.0.4
Event History
Frequently Asked Questions
Who can exploit this issue?
Any unauthenticated remote user can reach the affected action because it runs on every request and lacks both capability checks and nonce verification. No existing WordPress account is required.
What access does an attacker gain through the vulnerable option update?
An attacker can update arbitrary WordPress options. The described takeover path enables user registration and changes the default role to administrator, allowing the attacker to register an administrative account and take control of the site.
Which plugin versions are affected?
JSON Options WordPress plugin versions through 0.0.4 are affected.