PrefectHQ prefect up to 3.6.21 Health Check API /api/health endswith improper authentication

Summaryinfo

A vulnerability was found in PrefectHQ prefect up to 3.6.21. It has been declared as critical. Affected is the function endswith of the file /api/health of the component Health Check API. Executing a manipulation can lead to improper authentication. This vulnerability appears as CVE-2026-7722. The attack may be performed from remote. In addition, an exploit is available. It is recommended to upgrade the affected component. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.

Detailsinfo

A vulnerability was found in PrefectHQ prefect up to 3.6.21. It has been declared as critical. This vulnerability affects the function endswith of the file /api/health of the component Health Check API. The manipulation with an unknown input leads to a improper authentication vulnerability. The CWE definition for the vulnerability is CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. As an impact it is known to affect confidentiality.

The advisory is available at gist.github.com. This vulnerability was named CVE-2026-7722. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details and also a public exploit are known.

It is possible to download the exploit at gist.github.com. It is declared as proof-of-concept. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.

Upgrading to version 3.6.22 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch e21617125335025b4b27e7d6f0ca028e8e8f3b79 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

• PrefectHQ

Name

• prefect

Version

• 3.6.0
• 3.6.1
• 3.6.2
• 3.6.3
• 3.6.4
• 3.6.5
• 3.6.6
• 3.6.7
• 3.6.8
• 3.6.9
• 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
• 3.6.20
• 3.6.21

License

• open-source

Website

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

CPE 2.3info

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Submitinfo

Accepted

• Submit #807255: PrefectHQ Perfect <=3.6.21 Improper Authentication (by nedlir)

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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