CVE-2026-7722 PrefectHQ prefect Health Check API health endswith improper authentication
Attackers can bypass authentication on the Prefect Health Check API endpoint, potentially exposing health status information.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-7722?
CVE-2026-7722 is a medium-severity authentication bypass vulnerability in PrefectHQ prefect, published on 4 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability was detected in PrefectHQ prefect up to 3.6.21. This impacts the function endswith of the file /api/health of the component Health Check API. Performing a manipulation results in improper authentication. The attack is possible to be carried out remotely. The exploit is now public and may be used. Upgrading to version 3.6.22 will fix this issue. The patch is named e21617125335025b4b27e7d6f0ca028e8e8f3b79. Upgrading the affected component is recommended. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.
Weakness: CWE-287
Which versions are affected by CVE-2026-7722?
3 open source packages ship an affected version, including prefect.
| Package | Affected | Fixed in |
|---|---|---|
prefect PyPI | All versions | 3.6.22 |
prefect PyPI | All versions | 3.6.22 |
prefect PyPI | All versions | 3.6.22 |
How do I fix CVE-2026-7722?
Upgrade prefect to 3.6.22 or later.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-7722 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-7722 exists.
Sources
Also known as GHSA-6rr6-v7cj-mxpg, PYSEC-2026-2956, ROOT-APP-PYPI-CVE-2026-7722.