CVE-2026-28008 WordPress OAuth Single Sign On – SSO (OAuth Client) plugin <= 7.0.0 - Broken Authentication vulnerability
Unauthenticated attackers can bypass authentication in the WordPress OAuth SSO plugin, potentially taking over accounts.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-28008?
CVE-2026-28008 is a critical authentication bypass vulnerability in miniOrange OAuth Single Sign On – SSO (OAuth Client), published on 13 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Unauthenticated Broken Authentication in OAuth Single Sign On – SSO (OAuth Client) <= 7.0.0 versions.
Weakness: CWE-290
Which versions are affected by CVE-2026-28008?
How do I fix CVE-2026-28008?
No fix has been published for CVE-2026-28008 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-28008 being exploited?
There is no known exploitation of CVE-2026-28008 in the wild and no public exploit code.
Sources
Also known as GHSA-mf9c-gfqh-h78j.