CVE-2026-42303 Fides: Privacy Request Identity Verification Bypass Vulnerability via Duplicate Detection
Attackers can bypass identity verification to approve privacy requests, leading to unauthorized data deletion in Fides deployments with specific features enabled.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-42303?
CVE-2026-42303 is a medium-severity vulnerability in ethyca fides, published on 12 May 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
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.
Which versions are affected by CVE-2026-42303?
3 open source packages ship an affected version, including ethyca-fides.
| Package | Affected | Fixed in |
|---|---|---|
ethyca-fides PyPI | From 2.75.0 | 2.83.2 |
ethyca-fides PyPI | From 2.75.0 | 2.83.2 |
ethyca-fides PyPI | From 2.75.0 | 2.83.2 |
How do I fix CVE-2026-42303?
Upgrade ethyca-fides to 2.83.2 or later.
Is CVE-2026-42303 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-42303 exists.
Sources
Also known as GHSA-qx5f-ghc2-7g5c, PYSEC-2026-2471.