CVE-2026-15939 Simple Restrict < 1.2.9 - Contributor+ Restricted Content Disclosure via REST API
Contributors can read restricted content via REST API due to missing permission checks in the Simple Restrict WordPress plugin.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-15939?
CVE-2026-15939 is a low-severity missing authorization vulnerability in Unknown Simple Restrict, published on 2 Aug 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
The Simple Restrict WordPress plugin before 1.2.9 does not enforce its content-restriction permission check on the REST API the way it does on the front end, relying there on a generic capability check instead of the Simple Restrict WordPress plugin before 1.2.9's own permission system, allowing users with contributor-level access or above to read the content of restricted posts and pages they were never granted access to.
Weakness: CWE-863
Which versions are affected by CVE-2026-15939?
How do I fix CVE-2026-15939?
No fix has been published for CVE-2026-15939 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-2026-15939 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-15939 exists.
Sources
Also known as GHSA-4v4h-6mhp-rwxf.