CVE-2026-13342

Security Optimizer – The All-In-One Protection Plugin < 1.6.5 - Login Access IP Allowlist Bypass via post_password

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-allowlisted IP addresses can reach and use the login form, defeating the access control the administrator configured.

Affected

Security Optimizer

CVSS v3.1 WPSCAN

5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

EPSS

0.35% chance of exploitation in the next 30 days, 27th percentile

Published

2026-08-06

Updated

2026-08-07

Proof-of-concept exploits (1)

• https://wpscan.com/vulnerability/ab14b11c-96ab-4d07-89e0-1d67e4314267/

References

• CVE Record
• NVD entry