Authentication Bypass in Limit Login Attempts Reloaded Plugin for WordPress
CVE-2026-18356

3.7LOW

Key Information:

Vendor

WordPress
Status
Limit Login Attempts Security
Vendor
CVE Published:
21 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-18356?

The Limit Login Attempts Reloaded plugin for WordPress is susceptible to an authentication bypass due to its failure to perform case-insensitive comparisons on its username denylist. Furthermore, the plugin does not consider the account's associated email address, which allows blocked accounts to authenticate successfully, potentially compromising security measures intended to restrict access.

Affected Version(s)

Limit Login Attempts Security 0 < 3.3.5

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-18356 - Proof of Concept

References

https://wpscan.com/vulnerability/fbcf5a9a-f204-49b8-aa80-...
exploitvdb-entrytechnical-description

CVSS V3.1

Score:
3.7
Severity:
LOW
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Artus KG
WPScan
.