# CVE-2026-100744: coollabsio Coolify Route-Level Middleware CanUpdateResource.php authorization

> Attackers can bypass authorization checks in Coolify's route middleware to modify resources they should not access.

- **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:** 30 Sep 2026
- **Also known as:** GHSA-wv46-wr7m-42rh

## What is CVE-2026-100744?

CVE-2026-100744 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 flaw has been found in coollabsio Coolify up to 4.1.2. The affected element is an unknown function of the file app/Http/Middleware/CanUpdateResource.php of the component Route-Level Middleware. Executing a manipulation can lead to missing authorization. The attack may be launched remotely. The exploit has been published and may be used. Upgrading to version 4.2.0 is sufficient to fix this issue. This patch is called 39ae16de4248075de8c08f3259114e064b20d52d. It is advisable to upgrade the affected component.

Weakness: CWE-863 (Incorrect Authorization), CWE-862 (Missing Authorization)

## Which versions are affected by CVE-2026-100744?


## How do I fix CVE-2026-100744?

No fix has been published for CVE-2026-100744 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-100744 being exploited?

There is no known exploitation of CVE-2026-100744 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-100744 and fix it if it is affected.

What it is: CVE-2026-100744 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-2026-100744 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-2026-100744/ (Markdown: https://insights.sbomify.com/CVE-2026-100744/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-100744
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-100744
- OSV: https://osv.dev/vulnerability/CVE-2026-100744

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-100744/
Summaries are generated and may contain mistakes; the official description above is the record.