Improper Authentication in PrefectHQ Health Check API
CVE-2026-7722

6.9MEDIUM

Key Information:

Vendor

Prefecthq

Status
Prefect
Vendor
CVE Published:
4 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-7722?

A vulnerability was identified in the Health Check API of PrefectHQ's Prefect, affecting versions up to 3.6.21. This flaw allows for improper authentication through the 'endswith' function in the /api/health endpoint. Attackers could exploit this vulnerability remotely, increasing the risk of unauthorized access to sensitive resources. To mitigate this risk, it is crucial to upgrade to version 3.6.22, which includes the necessary fixes.

Affected Version(s)

prefect 3.6.0

prefect 3.6.1

prefect 3.6.2

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-7722 - Proof of Concept

References

https://vuldb.com/vuln/360898
vdb-entrytechnical-description
https://vuldb.com/vuln/360898/cti
signaturepermissions-required
https://vuldb.com/submit/807255
third-party-advisory

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

nedlir (VulDB User)
.