CVE-2026-72542 Windmill Labs Windmill - Missing Authorization
Authenticated operators can read metrics and modify progress for any job in the workspace, bypassing ownership checks.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-72542?
CVE-2026-72542 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 authenticated operators to write job progress and read job metrics for any job in the workspace regardless of ownership. The job_metrics handlers accept no authorization extractor, bypassing workspace-level access controls. An operator can monitor sensitive job execution data and inject misleading progress for jobs they do not own.
Weakness: CWE-306
Which versions are affected by CVE-2026-72542?
How do I fix CVE-2026-72542?
No fix has been published for CVE-2026-72542 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-72542 being exploited?
There is no known exploitation of CVE-2026-72542 in the wild and no public exploit code.
Sources
Also known as GHSA-x2wj-mjf7-8rr5.