Vulnerability · Published May 12, 2026 · Assigned by GitHub_M
CVE-2026-42303Fides: Privacy Request Identity Verification Bypass Vulnerability via Duplicate Detection
Medium 6.1
In plain English
A medium-severity authentication bypass in fides from ethyca. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 24% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | ethyca-fides | 2.83.2 | GHSA-qx5f-ghc2-7g5c |
| PyPI | ethyca-fides | 2.83.2 | PYSEC-2026-2471 |
Affected products (as reported)
Weakness: CWE-288, CWE-306, CWE-841 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:H/SA:N
References
- https://github.com/ethyca/fides/security/advisories/GHSA-qx5f-ghc2-7g5c x_refsource_CONFIRM
- https://github.com/ethyca/fides/pull/7971 x_refsource_MISC
- https://github.com/ethyca/fides/pull/7972 x_refsource_MISC
- https://github.com/ethyca/fides/commit/0e320b20934eb5af3a3d5127dba2691605d7ff37 x_refsource_MISC
- https://github.com/ethyca/fides/commit/e7a6527b0f9fdc9887b86a89bb5453e7421882dd x_refsource_MISC
- https://github.com/ethyca/fides/releases/tag/2.83.2 x_refsource_MISC