CVE-2026-82183CWE-287

CVE-2026-82183

High · published September 2, 2026

CVSS v3.1
8.1
EPSS
0%
Percentile
31.2
In the wild
Unconfirmed
What it is

The OAuth Single Sign On WordPress plugin before 7.0.1 does not verify the identity assertion returned by its Steam single sign-on flow, allowing unauthenticated attackers to log in as an arbitrary non-administrator user, and to create new accounts.

The record
Technical detail
CVSS v3.1
8.1 · HIGH
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00383 · 31.2th percentile
Weakness
CWE-287 · Improper Authentication
Published
2026-09-02T10:17Z
References (1)
https://wpscan.com/vulnerability/bc7c18f2-4e8c-47a3-a972-6162fd27aaca/ · [email protected]
EPSS history
Timeline
  • 03 SEP 03:32Z
    EPSS moved — → 0%
    epss
  • 02 SEP 06:00Z
    OAuth Single Sign On 6.25.0 - 7.0.0 - Unauthenticated Account Takeover via Unverified Steam OpenID Assertion
    cvelistv5