CVE-2026-13342

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreHIGH confidence

Score 5.3 from GitHub Security Advisory published 2026-08-07. a secondary CVSS source baseline 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.3Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
5.3
EG Score
5.3(high)
EG Risk
55(Attend)
EG Risk 55/100SSVC: Attend

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity53% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
17%
KEV
Not listed

Published

August 6, 2026

Last Modified

August 7, 2026

Advisory Details (1)

Auto-updated Aug 6, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

Security Optimizer – The All-In-One Protection Plugin < 1.6.5 – Login Access IP Allowlist Bypass via post_password | CVE 2026-13342 | Plugin Vulnerabilities

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

Vendor Advisories for CVE-2026-13342(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 20× in last 7d / 46× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-08-21 06:05 UTCEG score recompute
  2. 2026-08-21 06:05 UTCGHSA enrichment
  3. 2026-08-20 22:55 UTCEPSS rescore
  4. 2026-08-20 08:20 UTCEG score recompute
  5. 2026-08-20 08:20 UTCGHSA enrichment
  6. 2026-08-19 17:03 UTCEPSS rescore
  7. 2026-08-19 10:35 UTCEG score recompute
  8. 2026-08-19 10:34 UTCGHSA enrichment
  9. 2026-08-18 13:48 UTCEPSS rescore
  10. 2026-08-18 12:48 UTCGHSA enrichment
  11. 2026-08-17 14:42 UTCEG score recompute
  12. 2026-08-17 14:42 UTCGHSA enrichment
  13. 2026-08-16 16:58 UTCEG score recompute
  14. 2026-08-16 16:58 UTCGHSA enrichment
  15. 2026-08-16 14:56 UTCEPSS rescore
  16. 2026-08-16 02:14 UTCEPSS rescore
  17. 2026-08-15 19:13 UTCEG score recompute
  18. 2026-08-15 19:13 UTCGHSA enrichment
  19. 2026-08-15 01:30 UTCEPSS rescore
  20. 2026-08-14 21:28 UTCGHSA enrichment
  21. 2026-08-13 23:43 UTCEG score recompute
  22. 2026-08-13 23:43 UTCGHSA enrichment
  23. 2026-08-13 22:00 UTCEPSS rescore
  24. 2026-08-13 01:58 UTCEG score recompute
  25. 2026-08-13 01:58 UTCGHSA enrichment
Show 21 more
  1. 2026-08-12 13:50 UTCEPSS rescore
  2. 2026-08-12 04:13 UTCEG score recompute
  3. 2026-08-12 04:13 UTCGHSA enrichment
  4. 2026-08-11 13:42 UTCEPSS rescore
  5. 2026-08-11 06:27 UTCEG score recompute
  6. 2026-08-11 06:27 UTCGHSA enrichment
  7. 2026-08-10 23:59 UTCEPSS rescore
  8. 2026-08-10 08:42 UTCEG score recompute
  9. 2026-08-10 08:42 UTCGHSA enrichment
  10. 2026-08-09 13:46 UTCEPSS rescore
  11. 2026-08-09 10:57 UTCEG score recompute
  12. 2026-08-09 10:57 UTCGHSA enrichment
  13. 2026-08-08 16:37 UTCEPSS rescore
  14. 2026-08-08 13:13 UTCEG score recompute
  15. 2026-08-08 13:13 UTCGHSA enrichment
  16. 2026-08-07 15:27 UTCEG score recompute
  17. 2026-08-07 15:27 UTCGHSA enrichment
  18. 2026-08-07 14:38 UTCEG score recompute
  19. 2026-08-07 14:38 UTCGHSA enrichment
  20. 2026-08-06 22:17 UTCEG score recompute
  21. 2026-08-06 22:15 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-13342?
CVE-2026-13342 is a medium vulnerability published on August 6, 2026. 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…
When was CVE-2026-13342 disclosed?
CVE-2026-13342 was first published in the National Vulnerability Database on August 6, 2026, with the most recent update on August 7, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-13342 actively exploited?
CVE-2026-13342 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 83.0% of all scored CVEs.
What is the CVSS score of CVE-2026-13342?
CVE-2026-13342 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-13342?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-13342, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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