What is CVE-2026-16042?

CVE-2026-16042 is a medium-severity vulnerability in Lws Optimize, classified under Missing Authorization. CVSS score: 4.3/10. Published 2026-08-02.

How severe is CVE-2026-16042?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Auth bypass in Lws Optimize

CVE-2026-16042

The LWS Optimize WordPress plugin before 3.4 does not perform a capability check on its cache-clearing actions, allowing any authenticated user, including Subscribers, to flush the site's caches and force repeated cache rebuilds.

Vulnerability class: Broken Access Control

EPSS: 0.002 (9.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.

Affected products

Unknown Lws Optimize — versions 0

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

contact@wpscan.com (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2026-16042?: CVE-2026-16042 is a medium-severity vulnerability in Lws Optimize, classified under Missing Authorization. CVSS score: 4.3/10. Published 2026-08-02.
How severe is CVE-2026-16042?: Medium severity. CVSS v3 base score is 4.3 out of 10.