CVE-2026-13342: CWE-693 Protection Mechanism Failure in Security Optimizer
The Security Optimizer WordPress plugin versions 1.5.8 through 1.6.4 contain a vulnerability in the IP-based login restriction feature. This flaw allows unauthenticated requests from IP addresses not on the allowlist to bypass the restriction and access the login form, undermining the intended access control.
AI Analysis
Technical Summary
CVE-2026-13342 describes a protection mechanism failure (CWE-693) in the Security Optimizer WordPress plugin between versions 1.5.8 and 1.6.4. The plugin's optional IP-based login restriction feature does not properly validate incoming requests, enabling bypass of the IP allowlist. As a result, unauthenticated users from disallowed IP addresses can reach and use the login form, defeating the administrator-configured access control.
Potential Impact
The vulnerability allows bypassing IP-based login restrictions, potentially enabling unauthorized access attempts to the login interface from disallowed IP addresses. Although it does not directly lead to confidentiality or availability loss, it weakens access control and could facilitate further attacks.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, administrators should consider disabling the IP-based login restriction feature or implementing alternative access controls to protect the login interface.
CVE-2026-13342: CWE-693 Protection Mechanism Failure in Security Optimizer
Description
The Security Optimizer WordPress plugin versions 1.5.8 through 1.6.4 contain a vulnerability in the IP-based login restriction feature. This flaw allows unauthenticated requests from IP addresses not on the allowlist to bypass the restriction and access the login form, undermining the intended access control.
CVSS v3.1
Score 5.3medium
Affected software
Security Optimizer
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-13342 describes a protection mechanism failure (CWE-693) in the Security Optimizer WordPress plugin between versions 1.5.8 and 1.6.4. The plugin's optional IP-based login restriction feature does not properly validate incoming requests, enabling bypass of the IP allowlist. As a result, unauthenticated users from disallowed IP addresses can reach and use the login form, defeating the administrator-configured access control.
Potential Impact
The vulnerability allows bypassing IP-based login restrictions, potentially enabling unauthorized access attempts to the login interface from disallowed IP addresses. Although it does not directly lead to confidentiality or availability loss, it weakens access control and could facilitate further attacks.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, administrators should consider disabling the IP-based login restriction feature or implementing alternative access controls to protect the login interface.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WPScan
- Date Reserved
- 2026-06-25T14:12:28.351Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a7506f3bf8831d5395f53ff
Added to database: 08/06/2026, 22:13:07 UTC
Last enriched: 08/14/2026, 16:17:36 UTC
Last updated: 09/21/2026, 22:01:32 UTC
Views: 35
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