The Limit Login Attempts Reloaded WordPress plugin before 3.3.5 does not compare logins against its username denylist case-insensitively and does not account for the account's email address, allowing an account an administrator intended to block from logging in to authenticate anyway.
CVE-2026-18356
LOWPre-NVD 3.73.7—Trending — 3 sources updated this week
EchelonGraph scoreHIGH confidence
Score 3.7 from GitHub Security Advisory (severity: LOW) published 2026-08-21. a secondary CVSS source baseline 3.7; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: ghsa, secondary
3.7EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: —CVSS: 3.7Exploit: None knownExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 3.7
- EG Score
- 3.7(high)
- EG Risk
- 17(Track)EG Risk 17/100SSVC: Track
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 computedSeverity37% × 45%Exploitation0% × 40%Automatability0% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- —
- EPSS %ILE
- —
- KEV
- Not listed
Published
August 21, 2026
Last Modified
August 21, 2026
References (1)
Vendor Advisories for CVE-2026-18356(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 7× in last 7d / 7× 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.
- 2026-08-21 13:20 UTCEG score recompute
- 2026-08-21 13:20 UTCGHSA enrichment
- 2026-08-21 13:09 UTCEG score recompute
- 2026-08-21 13:09 UTCGHSA enrichment
- 2026-08-21 12:19 UTCEG score recompute
- 2026-08-21 11:55 UTCEG score recompute
- 2026-08-21 11:54 UTCMITRE cvelistV5first tracked
Frequently asked(4)
What is CVE-2026-18356?
CVE-2026-18356 is a low vulnerability published on August 21, 2026. The Limit Login Attempts Reloaded WordPress plugin before 3.3.5 does not compare logins against its username denylist case-insensitively and does not account for the account's email address, allowing an account an administrator intended to block from logging in to authenticate anyway.
When was CVE-2026-18356 disclosed?
CVE-2026-18356 was first published in the National Vulnerability Database on August 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
What is the CVSS score of CVE-2026-18356?
CVE-2026-18356 has a CVSS v3 base score of 3.7 (NVD).
How do I remediate CVE-2026-18356?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-18356, 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
Explore the affected products and dependency analysis for CVE-2026-18356
Is Your Infrastructure Affected by CVE-2026-18356?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.