CVE-2026-77995 Auth bypass in Login with Keycloak OAuth Single Sign-On (SSO) (free) extension for Joomla
Attackers can manipulate cookies to log in as arbitrary users, including administrators, in affected Joomla SSO extensions.
- 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-2026-77995?
CVE-2026-77995 is a critical authentication bypass vulnerability in miniorange.com Login with Keycloak OAuth Single Sign-On (SSO) (free) extension for Joomla, published on 24 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Joomla Extension - miniorange.com - Arbitrary account takeover in miniOrange OAuth Client < 3.2.0, OAuth Single Sign-On – OIDC SSO < 1.2.2, Login with Keycloak OAuth Single Sign-On (SSO) < 1.2.2, Single Sign-On for Educational Institutes < 1.2.2 - The manipulation of a cookie value allows actors to login as arbitrary accounts, including admins.
Weakness: CWE-639
Which versions are affected by CVE-2026-77995?
How do I fix CVE-2026-77995?
No fix has been published for CVE-2026-77995 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-2026-77995 being exploited?
There is no known exploitation of CVE-2026-77995 in the wild and no public exploit code.
Sources
Also known as GHSA-9v52-pgw4-78ww.