# 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.

- **Severity:** Critical 10.0 (`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`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 24 Aug 2026
- **Updated:** 8 Sep 2026
- **Also known as:** GHSA-9v52-pgw4-78ww

## 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 (Authorization Bypass Through User-Controlled Key)

## 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.

## Is CVE-2026-77995 being exploited?

There is no known exploitation of CVE-2026-77995 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-77995 and fix it if it is affected.

What it is: 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.
Exploitation: There is no known exploitation of CVE-2026-77995 in the wild and no public exploit code.

Affected product: miniorange.com Login with Keycloak OAuth Single Sign-On (SSO) (free) extension for Joomla. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-77995/ (Markdown: https://insights.sbomify.com/CVE-2026-77995/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-77995
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-77995
- OSV: https://osv.dev/vulnerability/CVE-2026-77995

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-77995/
Summaries are generated and may contain mistakes; the official description above is the record.