CVE-2026-13342 | BDVDB-2026-355749 Detail

Security Optimizer

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.

Impact#

Per CVSS v3.1: confidentiality impact none, integrity impact low, availability impact none. Attack vector: network.

Weaknesses#

CWE-693 Protection Mechanism Failure

References#

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

Exploit#

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

History#

Version 12026-08-06Record published in the CVE List.
Version 22026-08-07Most recent update recorded in the CVE List.

Published

Published: 2026-08-06
Last modified: 2026-08-07

Vendor information

Vendor: Not stated
Product: Security Optimizer

Score

5.3 Medium

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 28.5.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Not classified

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
>= 1.5.8 and < 1.6.5
Fixed
1.6.5

Scoring System

CVSS v4.0

Not available

CVSS v3.1

5.3 Medium

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

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Privileges Required	None
User Interaction	None
Scope	Unchanged
Confidentiality	None
Integrity	Low
Availability	None

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).