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CVE-2026-7722

PrefectHQ prefect Health Check API health endswith improper authentication

MEDIUM

5.3

CVSS Score

Published: May 4, 2026 at 02:15 AM UTC

Updated: June 17, 2026 at 11:02 AM UTC

2 products affected across 2 vendorsPrefectPrefect

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Severity

MEDIUM5.3

Exploit prediction

EPSS 0.5%

SSVC

PoC

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. Upgrading the affected component is recommended.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Prefect · Prefect

95%

All versions

Prefect · Prefecthq

60%

3.6.0 3.6.1 3.6.10 3.6.11 3.6.12 3.6.13 3.6.14 3.6.15 3.6.16 3.6.17 3.6.18 3.6.19 3.6.2 3.6.20 3.6.21 3.6.3 3.6.4 3.6.5 3.6.6 3.6.7 3.6.8 3.6.9

Vendor states this is fixed in 3.6.22 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (9)

VDB EntryTechnical Description

Source: cverecord

https://vuldb.com/vuln/360898

SignaturePermissions Required

Source: cverecord

https://vuldb.com/vuln/360898/cti

Third Party Advisory

Source: cverecord

https://vuldb.com/submit/807255

Exploit

Source: cverecord

https://gist.github.com/nedlir/f576abbb0e491dc9bb7e106c140dda04

Issue TrackingPatch

Source: cverecord

https://github.com/PrefectHQ/prefect/pull/21063

Source: cverecord

https://github.com/PrefectHQ/prefect/pull/21063/changes/d8c4ff97ef7c0a940925d32b2d76324c8def42de

Patch

Source: cverecord

https://github.com/PrefectHQ/prefect/releases/tag/3.6.22

Product

Source: cverecord

https://github.com/PrefectHQ/prefect/

SSVC — Action Prioritization

SSVCPoCAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.3MEDIUMVulDB

Vector?

Quick Info

StatusDEFERRED

CWE

CWE-287

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