# CVE-2026-72541: Windmill Labs Windmill - Missing Authorization

> Authenticated workspace members can overwrite resource type schemas due to missing authorization checks, potentially corrupting definitions and breaking dependent workflows.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 11 Aug 2026
- **Updated:** 11 Aug 2026
- **Also known as:** GHSA-m628-hrwj-47mg

## What is CVE-2026-72541?

CVE-2026-72541 is a medium-severity missing authorization vulnerability in Windmill, published on 11 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A missing authorization vulnerability in Windmill Labs Windmill through 1.783.0 allows any authenticated workspace member to overwrite any resource type schema via the update_resource_type endpoint. The endpoint omits the administrator permission check that the corresponding delete_resource_type endpoint enforces. An attacker with workspace member privileges can corrupt resource type definitions, breaking workflows that depend on them.

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

## Which versions are affected by CVE-2026-72541?


## How do I fix CVE-2026-72541?

No fix has been published for CVE-2026-72541 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-72541 being exploited?

There is no known exploitation of CVE-2026-72541 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-72541 and fix it if it is affected.

What it is: CVE-2026-72541 is a medium-severity missing authorization vulnerability in Windmill, published on 11 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-72541 in the wild and no public exploit code.

Affected product: Windmill. 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-2026-72541/ (Markdown: https://insights.sbomify.com/CVE-2026-72541/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-72541
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-72541
- OSV: https://osv.dev/vulnerability/CVE-2026-72541

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-72541/
Summaries are generated and may contain mistakes; the official description above is the record.