OAuth Single Sign On Plugin for WordPress Exposes User Accounts
CVE-2026-82183

8.1HIGH

Key Information:

Vendor

WordPress
Status
Oauth Single Sign On
Vendor
CVE Published:
2 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-82183?

The OAuth Single Sign On plugin for WordPress suffers from a significant flaw in its handling of the Steam single sign-on process. This flaw permits unauthenticated attackers to bypass authentication mechanisms, allowing them to log in as any non-administrator user. Furthermore, the vulnerability enables these malicious actors to create new user accounts, potentially compromising the site's security and integrity. Website administrators must update the plugin to version 7.0.1 or later to mitigate this risk.

Affected Version(s)

OAuth Single Sign On 6.25.0 < 7.0.1

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-2026-82183 - Proof of Concept

References

https://wpscan.com/vulnerability/bc7c18f2-4e8c-47a3-a972-...
exploitvdb-entrytechnical-description

CVSS V3.1

Score:
8.1
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
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

Pedro Pinho
WPScan
.