What is CVE-2026-7722?

CVE-2026-7722 is a medium-severity vulnerability in Prefecthq Prefect, classified under Improper Authentication. CVSS score: 5.3/10. Published 2026-05-04.

How severe is CVE-2026-7722?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Auth bypass in Prefecthq Prefect

CVE-2026-7722

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.

Vulnerability class: Broken Authentication

Published 2026-05-04 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.008 (53.6th percentile), scored 2026-09-25.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 53.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.008 · change: +0.003

Affected products

Prefecthq Prefect — versions 3.6.0, 3.6.1, 3.6.2

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

vuldb.com/vuln/360898 (technical-description, vdb-entry)
vuldb.com/vuln/360898/cti (signature, permissions-required)
vuldb.com/submit/807255 (third-party-advisory)
gist.github.com/nedlir/f576abbb0e491dc9bb7e106c140dda04 (exploit)
github.com/PrefectHQ/prefect/pull/21063 (issue-tracking, patch)
github.com/PrefectHQ/prefect/pull/21063/changes/d8c4ff97ef7c0a940925d32b2d76324… (issue-tracking, patch)
github.com/PrefectHQ/prefect/releases/tag/3.6.22 (patch)
github.com/PrefectHQ/prefect/ (product)
github.com/PrefectHQ/prefect/commit/e21617125335025b4b27e7d6f0ca028e8e8f3b79 (patch)

Frequently asked questions

What is CVE-2026-7722?: CVE-2026-7722 is a medium-severity vulnerability in Prefecthq Prefect, classified under Improper Authentication. CVSS score: 5.3/10. Published 2026-05-04.
How severe is CVE-2026-7722?: Medium severity. CVSS v3 base score is 5.3 out of 10.