Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
Unknown Security Optimizer — Security Optimizer – The All-In-One Protection Plugin < 1.6.5 - Login Access IP Allowlist Bypass via post_password
AV AC PR UI S C I A CVSS EPSS %ile KEV
N L N N U N L N 5.3 .0025 17.0 —
AFFECTED
Product Versions Fixed
Security Optimizer 1.5.8 – —
TIMELINE
Jun 25 Reserved by WPScan
Aug 6 Published (CNA: WPScan)
Aug 7 EXPLOIT PUBLISHED — CVE-2026-13342 (Unknown Security Optimizer). Public exploit reference 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.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
|---|
| June 25, 2026 | Reserved | Reserved by WPScan |
| August 6, 2026 | Published | Published (CNA: WPScan) |
| August 7, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-13342 (Unknown Security Optimizer). Public exploit reference added. |
Affected
Affected products and packages — 1 row
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| Unknown | Security Optimizer | — | 1.5.8 | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-13342 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.