CVE-2026-39767 WordPress WPBase Cache plugin <= 5.5.6 - Denial of Service Attack vulnerability
A subscriber can cause a denial of service in the WPBase Cache plugin, requiring site administrators to update the plugin.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-39767?
CVE-2026-39767 is a medium-severity denial of service vulnerability in baseapp WPBase Cache, published on 6 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Subscriber Denial of Service Attack in WPBase Cache <= 5.5.6 versions.
Weakness: CWE-770
Which versions are affected by CVE-2026-39767?
How do I fix CVE-2026-39767?
No fix has been published for CVE-2026-39767 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-39767 being exploited?
There is no known exploitation of CVE-2026-39767 in the wild and no public exploit code.
Sources
Also known as GHSA-fmv7-xw6m-9jpc.