CVE-2026-82183— OAuth Single Sign On 6.25.0 - 7.0.0 - Unauthenticated Account Takeover via Unverified Steam OpenID Assertion
Quick assessment
Affected
Unknown OAuth Single Sign On
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
WordPress 插件 OAuth Single Sign On 在 7.0.1 版本之前，未验证其 Steam 单点登录流程返回的身份声明（identity assertion）。这使得未经身份验证的攻击者能够以任意非管理员用户身份登录，并可以创建新账户。
Possible ATT&CK Techniques 1 AI
T1099
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I. Basic Information for CVE-2026-82183
Vulnerability Information
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Vulnerability Title
OAuth Single Sign On 6.25.0 - 7.0.0 - Unauthenticated Account Takeover via Unverified Steam OpenID Assertion
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Unknown | OAuth Single Sign On | 6.25.0 ~ 7.0.1 | - |
|
II. Public POCs for CVE-2026-82183
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Security Blog Posts for CVE-2026-82183 (1)
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🔗 OAuth Single Sign On 6.25.0 – 7.0.0 – Unauthenticated Account Takeover via Unverified Steam OpenID Assertion | CVE 2026-82183 | Plugin Vulnerabilities exploit vdb-entry technical-description
Same Patch Batch · Unknown · 2026-09-02 · 41 CVEs total
| CVE-2026-19453 | JetBackup 3.1.7.9 - 3.1.23.3 - Subscriber+ Privilege Escalation via Restore Admin User Sel | |
| CVE-2026-77783 | Rank Math SEO < 1.0.277 - Unauthenticated Non-Public Post Schema and Content Disclosure | |
| CVE-2026-77785 | Rank Math SEO < 1.0.277 - Author+ Non-Public Post Content Disclosure via Abilities API | |
| CVE-2026-77764 | GamiPress < 7.9.9.6 - Subscriber+ Arbitrary User Points and Achievement Award via Watch-Vi | |
| CVE-2026-77782 | Rank Math SEO < 1.0.277.1 - Unauthenticated Password-Protected Post Content Disclosure via | |
| CVE-2026-74927 | MultiVendorX 5.0.13 - 5.0.14 - Unauthenticated Vendor PII and Payout Data Disclosure via s | |
| CVE-2026-19116 | WP User Frontend < 4.3.11 - Subscriber+ PHP Object Injection via Frontend Post Edit Form | |
| CVE-2026-19251 | Ultimate Member < 2.13.0 - Unauthenticated Unapproved Comment Disclosure via Profile Activ | |
| CVE-2026-19704 | Comments – wpDiscuz < 7.6.66 - Unauthenticated Comment Disclosure via SQLi | |
| CVE-2026-19719 | Social Media Share Buttons & Social Sharing Icons < 3.0.1 - Contributor+ Stored XSS via Po | |
| CVE-2026-77784 | Rank Math SEO < 1.0.277 - Author+ Robots and Pillar Content Meta Update on Non-Owned Objec | |
| CVE-2026-19723 | Social Media Share Buttons & Social Sharing Icons < 3.0.1 - Reflected XSS via Pin It Share | |
| CVE-2026-15232 | Appointment Booking Lite < 2.4.8 - Unauthenticated Arbitrary Reservation Deletion | |
| CVE-2026-16966 | Solace Extra < 1.7.0 - Unauthenticated Draft/Private Site Builder Content Disclosure via g | |
| CVE-2026-16983 | Gutentor < 4.0.6 - Subscriber+ Password Protected Post Password Disclosure via REST API | |
| CVE-2026-14215 | Amelia < 2.4.9 - Unauthenticated Post-Booking Action Trigger | |
| CVE-2026-12526 | Advanced Custom Fields: Extended < 0.9.2.7 - Unauthenticated Administrator Account Takeove | |
| CVE-2026-12865 | Photo Gallery by 10Web < 1.8.44 - Reflected XSS via title and paged Parameters | |
| CVE-2025-15663 | BEAF < 4.7.19 - Author+ Stored XSS via After Label | |
| CVE-2025-15664 | BEAF < 4.7.19 - Author+ Stored XSS via Before Label |
Showing top 20 of 41 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same vendor: Unknown
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JetStyleManager < 1.3.9 - Skin Deletion and Modification via -
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WC Vendors < 2.7.2.1 - Vendor+ Cross-Vendor Product and Arbi
V. Comments for CVE-2026-82183
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