Vulnerability · Published Aug 6, 2026 · Assigned by WPScan
CVE-2026-13342Security Optimizer – The All-In-One Protection Plugin < 1.6.5 - Login Access IP Allowlist Bypass via post_password
Medium 5.3
In plain English
A medium-severity security flaw in Security Optimizer from Unknown. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 28% of all known vulnerabilities).
Severity (CVSS 3.1)5.3Medium
Exploit odds (30 days)0.3%top 71.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
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 products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Unknown | Security Optimizer | 1.5.8 – before 1.6.5 |
Weakness: CWE-693 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
References
- https://wpscan.com/vulnerability/ab14b11c-96ab-4d07-89e0-1d67e4314267/ exploit, vdb-entry, technical-description