# CVE-2026-100746: coollabsio Coolify GitHub App Setup redirect missing authentication

> Attackers can bypass authentication in the GitHub App Setup redirect handler, potentially gaining unauthorized access to the Coolify platform.

- **Severity:** Medium 6.9 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 27 Sep 2026
- **Updated:** 28 Sep 2026
- **Also known as:** GHSA-696w-453m-h6jm

## What is CVE-2026-100746?

CVE-2026-100746 is a medium-severity missing authorization vulnerability in coollabsio Coolify, published on 27 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability was found in coollabsio Coolify up to 4.1.0. This affects the function Github::redirect of the file /webhooks/source/github/redirect of the component GitHub App Setup Handler. The manipulation of the argument state results in missing authentication. The attack can be executed remotely. The exploit has been made public and could be used. Upgrading to version 4.1.1 mitigates this issue. The patch is identified as fc89e357feed5180ed1ab5eb9cb330578f025539. The affected component should be upgraded.

Weakness: CWE-306 (Missing Authentication for Critical Functionality), CWE-287 (Improper Authentication)

## Which versions are affected by CVE-2026-100746?


## How do I fix CVE-2026-100746?

No fix has been published for CVE-2026-100746 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-100746 being exploited?

There is no known exploitation of CVE-2026-100746 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-100746 and fix it if it is affected.

What it is: CVE-2026-100746 is a medium-severity missing authorization vulnerability in coollabsio Coolify, published on 27 Sep 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-2026-100746 in the wild and no public exploit code.

Affected product: coollabsio Coolify. 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-2026-100746/ (Markdown: https://insights.sbomify.com/CVE-2026-100746/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-100746
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-100746
- OSV: https://osv.dev/vulnerability/CVE-2026-100746

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-100746/
Summaries are generated and may contain mistakes; the official description above is the record.