CVE-2026-87828 Seraphinite Accelerator < 2.29.24 - Subscriber+ DoS via seraph_accel_State Update
Authenticated subscribers can cause a denial of service in the WordPress admin area by exploiting a missing capability check in the Seraphinite Accelerator plugin.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-87828?
CVE-2026-87828 is a medium-severity missing authorization vulnerability in Unknown Seraphinite Accelerator, published on 16 Sep 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
The Seraphinite Accelerator WordPress plugin before 2.29.24 does not perform a capability check on one of its state-update AJAX actions, allowing authenticated users such as subscribers to write a malformed value that causes an uncaught error on every subsequent admin page load, making the entire admin area inaccessible to all administrators (denial of service).
Weakness: CWE-400
Which versions are affected by CVE-2026-87828?
How do I fix CVE-2026-87828?
No fix has been published for CVE-2026-87828 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-2026-87828 being exploited?
There is no known exploitation of CVE-2026-87828 in the wild and no public exploit code.
Sources
Also known as GHSA-pwq8-qxp8-42qc.