Two-Factor Authentication Bypass in WebAuthn Provider for WordPress Plugin
CVE-2026-11883

7.2HIGH

Key Information:

Vendor

WordPress
Status
Webauthn Provider For Two Factor
Vendor
CVE Published:
1 July 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-11883?

The WebAuthn Provider for Two Factor WordPress plugin prior to version 2.5.6 contains a security flaw that fails to adequately validate the second-factor authentication responses. This vulnerability enables an attacker, who already possesses a user's password, to bypass the two-factor authentication mechanism by sending a specifically crafted (malformed) request. This presents a significant risk as it undermines the integrity of the two-factor authentication process, which is critical for securing user accounts.

Affected Version(s)

WebAuthn Provider for Two Factor 0 < 2.5.6

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-2026-11883 - Proof of Concept

References

https://wpscan.com/vulnerability/f718390c-1d7c-4048-bce6-...
exploitvdb-entrytechnical-description

CVSS V3.1

Score:
7.2
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Volodymyr Kolesnykov
WPScan
.