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.
Fix
Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.
Change history 1
- First seenCVSS 5.5NVD modified 2026-10-26 19:10
Affected (CPE criteria) 0
NVD has not attached CPE configurations yet.
References 8
- https://gist.github.com/nedlir/f576abbb0e491dc9bb7e106c140dda04
- https://github.com/PrefectHQ/prefect/
- https://github.com/PrefectHQ/prefect/commit/e21617125335025b4b27e7d6f0ca028e8e8f3b79
- https://github.com/PrefectHQ/prefect/pull/21063
- https://github.com/PrefectHQ/prefect/releases/tag/3.6.22
- https://vuldb.com/submit/807255
- https://vuldb.com/vuln/360898
- https://vuldb.com/vuln/360898/cti