Vulnerability in Limit Login Attempts Security

CVE-2026-18356

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.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 3.7 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.003 (15.6th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 16th percentile — 15.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-18356: held from 0.002 to 0.003.

EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001

Affected products

  • Limit Login Attempts Security

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-18356?
CVE-2026-18356 is a low-severity vulnerability in Limit Login Attempts Security, classified under Incomplete List of Disallowed Inputs. CVSS score: 3.7/10. Published 2026-08-21.
How severe is CVE-2026-18356?
Low severity. CVSS v3 base score is 3.7 out of 10.