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Vulnerability · Published Aug 24, 2026 · Assigned by Joomla

CVE-2026-77995Joomla 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

Critical 10.0

In plain English

A critical-severity authorization bypass via user-controlled key in Login with Keycloak OAuth Single Sign-On (SSO) (free) extension for Joomla from miniorange.com. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 35% of all known vulnerabilities).

Severity (CVSS 4.0)10.0Critical
Exploit odds (30 days)0.4%top 65.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

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.

Affected products (as reported)

VendorProductVersions
miniorange.com miniOrange OAuth Client (free) extension for Joomla 1.0.0-3.1.9
miniorange.com OAuth Single Sign-On – OIDC SSO | Login with Azure AD (free) extension for Joomla 1.0.0-1.2.1
miniorange.com Login with Keycloak OAuth Single Sign-On (SSO) (free) extension for Joomla 1.0.0-1.2.1
miniorange.com Single Sign-On for Educational Institutes (free) extension for Joomla 1.0.0-1.2.1

Weakness: CWE-639 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

References