CVE-2026-78153 Restrict User Access 2.6 - 2.8 - Unauthenticated Content Protection Bypass via REST API Route Normalization
Unauthenticated attackers can bypass content protection and read restricted data or enumerate users via REST API route normalization flaws.
- 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-2026-78153?
CVE-2026-78153 is a medium-severity missing authorization vulnerability in Unknown Restrict User Access, published on 2 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Restrict User Access WordPress plugin before 2.8.1 does not normalise the REST API route before checking it against the routes its content protection covers, allowing unauthenticated users to bypass that protection and read restricted content and enumerate users.
Weakness: CWE-863
Which versions are affected by CVE-2026-78153?
How do I fix CVE-2026-78153?
No fix has been published for CVE-2026-78153 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-2026-78153 being exploited?
There is no known exploitation of CVE-2026-78153 in the wild and no public exploit code.
Sources
Also known as GHSA-2hp9-5v75-v9jj.