What is CVE-2026-13342?

CVE-2026-13342 is a medium-severity vulnerability in Security Optimizer, classified under Protection Mechanism Failure. CVSS score: 5.3/10. Published 2026-08-06.

How severe is CVE-2026-13342?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Security Optimizer

CVE-2026-13342

The Security Optimizer WordPress plugin from 1.5.8 to 1.6.4 does not correctly validate requests to its optional IP-based login restriction feature, allowing the restriction to be bypassed so that unauthenticated requests from non-allowlis…

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

Affected products

Unknown Security Optimizer — versions 1.5.8

Weakness classification (CWE)

CWE-693 — Protection Mechanism Failure

References

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

Frequently asked questions

What is CVE-2026-13342?: CVE-2026-13342 is a medium-severity vulnerability in Security Optimizer, classified under Protection Mechanism Failure. CVSS score: 5.3/10. Published 2026-08-06.
How severe is CVE-2026-13342?: Medium severity. CVSS v3 base score is 5.3 out of 10.