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.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact Low

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Unknown Security Optimizer unaffected
Version Status Constraints
1.5.8 affected < 1.6.5

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Project Subscriptions

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Advisories

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://wpscan.com/vulnerability/ab14b11c-96ab-4d07-89e0-1d67e4314267/ cve-icon
History

Fri, 07 Aug 2026 00:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-20
CWE-285

Thu, 06 Aug 2026 22:15:00 +0000

Type Values Removed Values Added
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.
Title Security Optimizer – The All-In-One Protection Plugin < 1.6.5 - Login Access IP Allowlist Bypass via post_password
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: WPScan

Published:

Updated: 2026-08-06T17:07:33.376Z

Reserved: 2026-06-25T14:12:28.351Z

Link: CVE-2026-13342

cve-icon Vulnrichment

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cve-icon NVD

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cve-icon Redhat

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cve-icon OpenCVE Enrichment

Updated: 2026-08-06T23:45:03Z

Weaknesses