CVE-2026-81285 WordPress Smush Image Compression and Optimization plugin <= 4.2.0 - Denial of Service Attack vulnerability
Unauthenticated attackers can cause a denial of service in the Smush WordPress plugin, affecting site availability.
- 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-2026-81285?
CVE-2026-81285 is a high-severity denial of service vulnerability in WPMU DEV Smush Image Compression and Optimization, published on 28 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Unauthenticated Denial of Service Attack in Smush Image Compression and Optimization <= 4.2.0 versions.
Weakness: CWE-770
Which versions are affected by CVE-2026-81285?
How do I fix CVE-2026-81285?
No fix has been published for CVE-2026-81285 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-2026-81285 being exploited?
There is no known exploitation of CVE-2026-81285 in the wild and no public exploit code.
Sources
Also known as GHSA-p96r-537r-m99j.