ethyca fides up to 2.83.1 authentication bypass

Summaryinfo

A vulnerability categorized as critical has been discovered in ethyca fides up to 2.83.1. Impacted is an unknown function. Executing a manipulation can lead to authentication bypass. This vulnerability is registered as CVE-2026-42303. It is possible to launch the attack remotely. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability has been found in ethyca fides up to 2.83.1 and classified as critical. This vulnerability affects an unknown functionality. The manipulation with an unknown input leads to a authentication bypass vulnerability. The CWE definition for the vulnerability is CWE-288. A product requires authentication, but the product has an alternate path or channel that does not require authentication. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Fides is an open-source privacy engineering platform. From 2.75.0 to before 2.83.2, Fides deployments that enable both subject identity verification and duplicate privacy request detection are affected by a vulnerability in which an administrator can approve a privacy request whose identity was never verified. For erasure policies, this can result in unauthorized deletion of a data subject's records across every integration configured in the affected deployment. This vulnerability is fixed in 2.83.2.

The advisory is shared for download at github.com. This vulnerability was named CVE-2026-42303 since 04/26/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available.

Upgrading to version 2.83.2 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 0e320b20934eb5af3a3d5127dba2691605d7ff37 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.

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Productinfo

Vendor

• ethyca

Name

• fides

Version

• 2.83.0
• 2.83.1

License

• open-source

Website

• Product: https://github.com/ethyca/fides/

CPE 2.3info

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CPE 2.2info

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