CVE-2026-75860 JSON Options <= 0.0.4 - Unauthenticated Arbitrary Options Update
Unauthenticated attackers can update arbitrary WordPress options to enable registration and assign administrator roles, leading to full site takeover.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-75860?
CVE-2026-75860 is a critical missing authorization vulnerability in Unknown JSON Options, published on 20 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-269
Which versions are affected by CVE-2026-75860?
How do I fix CVE-2026-75860?
No fix has been published for CVE-2026-75860 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-75860 being exploited?
There is no known exploitation of CVE-2026-75860 in the wild and no public exploit code.
Sources
Also known as GHSA-8hgw-w4m4-6hmx.