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CVE-2026-28008— WordPress OAuth Single Sign On – SSO (OAuth Client) plugin <= 7.0.0 - Broken Authentication vulnerability

Quick assessment

Affected
miniOrange OAuth Single Sign On – SSO (OAuth Client)
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 OAuth Single Sign On是WordPress基金会开源的一款实现单点登录功能的身份认证组件。 WordPress OAuth Single Sign On 7.0.0及之前版本存在授权问题漏洞，该漏洞源于认证机制失效，可能导致未经身份验证的攻击者绕过认证。

CVSS 9.8 · Critical EPSS 0.61% · P47

Possible ATT&CK Techniques 1 AI

T1110 · Brute Force

Affected Version Matrix 1

VendorProduct Version RangeStatus
miniOrange OAuth Single Sign On – SSO (OAuth Client) n/a≤ 7.0.0 affected
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I. Basic Information for CVE-2026-28008

Vulnerability Information
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Vulnerability Title
WordPress OAuth Single Sign On – SSO (OAuth Client) plugin <= 7.0.0 - Broken Authentication vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Unauthenticated Broken Authentication in OAuth Single Sign On – SSO (OAuth Client) <= 7.0.0 versions.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
使用欺骗进行的认证绕过
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress OAuth Single Sign On 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress OAuth Single Sign On是WordPress基金会开源的一款实现单点登录功能的身份认证组件。 WordPress OAuth Single Sign On 7.0.0及之前版本存在授权问题漏洞，该漏洞源于认证机制失效，可能导致未经身份验证的攻击者绕过认证。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
miniOrange OAuth Single Sign On – SSO (OAuth Client) n/a ~ 7.0.0 -

II. Public POCs for CVE-2026-28008

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III. Intelligence Information for CVE-2026-28008

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Vendor Advisories for CVE-2026-28008 (1)

Same Patch Batch · miniOrange · 2026-08-13 · 5 CVEs total

CVE-2026-61967 9.8 CRITICAL WordPress miniorange otp verification plugin <= 5.5.1 - Privilege Escalation vulnerability
CVE-2026-28149 9.8 CRITICAL WordPress Headless Single Sign On plugin <= 1.6 - PHP Object Injection vulnerability
CVE-2026-28148 9.8 CRITICAL WordPress Headless Single Sign On plugin <= 1.6 - Bypass Vulnerability vulnerability
CVE-2026-61979 8.1 HIGH WordPress SAML SP Single Sign On plugin <= 5.4.3 - Privilege Escalation vulnerability

IV. Related Vulnerabilities

Same product: OAuth Single Sign On – SSO (OAuth Client)
Same vendor: miniOrange
Same weakness: CWE-290

V. Comments for CVE-2026-28008

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