Critical severity · published Aug 13, 2026
CVE-2026-28008
WordPress OAuth Single Sign On – SSO (OAuth Client) plugin <= 7.0.0 - Broken Authentication vulnerability
9.8
CVSS
0.6%
EPSS
No
On KEV
Description
Unauthenticated Broken Authentication in OAuth Single Sign On – SSO (OAuth Client) <= 7.0.0 versions.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 49% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OS
OAuth Single Sign On – SSO (OAuth Client) · miniOrange
through 7.0.0 · source: vendor
Affected product
OS
OAuth Single Sign On – SSO (OAuth Client)
miniOrange
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-28008
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-28008
patchstack.com
https://patchstack.com/database/wordpress/plugin/miniorange-login-with-eve-online-google-facebook/vulnerability/wordpress-oauth-single-sign-on-sso-oauth-client-plugin-7-0-0-broken-authentication-vulnerability?_s_id=cve
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