CVE-2026-92403 Secure Custom Fields < 6.9.4 - Unauthenticated Post Modification via Front-End Form ID Substitution
Unauthenticated attackers can modify post titles and content by submitting to a different registered form than the one rendered.
- 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-2026-92403?
CVE-2026-92403 is a low-severity missing authorization vulnerability in Unknown Secure Custom Fields, published on 19 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Secure Custom Fields WordPress plugin before 6.9.4 does not properly verify that a front-end form submission corresponds to the form that was rendered to the visitor, allowing unauthenticated users to submit against a different registered form and modify the title and content of the post that form is bound to.
Weakness: CWE-863
Which versions are affected by CVE-2026-92403?
How do I fix CVE-2026-92403?
No fix has been published for CVE-2026-92403 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-2026-92403 being exploited?
There is no known exploitation of CVE-2026-92403 in the wild and no public exploit code.
Sources
Also known as GHSA-6w7q-74cq-4m3f.