# Ethyca Fides has a Privacy Request Identity Verification Bypass Vulnerability via Duplicate Detection

Advisory record · `GHSA-qx5f-ghc2-7g5c`

- **Identifiers:** `GHSA-qx5f-ghc2-7g5c` · `CVE-2026-42303` · `PYSEC-2026-2471`
- **State:** Confirmed
- **Severity:** CVSS 6.1 Medium
- **Critical:** No
- **Weakness (CWE):** [CWE-288](https://cwe.mitre.org/data/definitions/288.html) · [CWE-306](https://cwe.mitre.org/data/definitions/306.html) · [CWE-841](https://cwe.mitre.org/data/definitions/841.html)
- **Tags:** [Authentication bypass](https://agentprime.io/advisories/tag/auth-bypass.md) · [CWE-841](https://agentprime.io/advisories/tag/cwe-841.md)
- **Published:** 5 May 2026
- **Updated:** 13 Jul 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 5 May 2026, 21:11 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `ethyca-fides` (PyPI): affected `>=2.75.0, <2.83.2`; fixed in `2.83.2`

## Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

## Severity and exploitation

- 6.1 Medium, CVSS 4.0: `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`, from CNA (GitHub_M)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0031, the 23rd percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 15:01 UTC: First seen by agentprime
- 31 Oct 2026, 15:01 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-qx5f-ghc2-7g5c)

## Sources

- [GitHub Advisory Database: GHSA-qx5f-ghc2-7g5c](https://github.com/advisories/GHSA-qx5f-ghc2-7g5c)
- [OSV: GHSA-qx5f-ghc2-7g5c](https://osv.dev/vulnerability/GHSA-qx5f-ghc2-7g5c)
- <https://github.com/ethyca/fides/security/advisories/GHSA-qx5f-ghc2-7g5c>
- <https://nvd.nist.gov/vuln/detail/CVE-2026-42303>
- <https://github.com/ethyca/fides/pull/7971>
- <https://github.com/ethyca/fides/pull/7972>
- <https://github.com/ethyca/fides/commit/0e320b20934eb5af3a3d5127dba2691605d7ff37>
- <https://github.com/ethyca/fides/commit/e7a6527b0f9fdc9887b86a89bb5453e7421882dd>
- <https://github.com/ethyca/fides>
- <https://github.com/ethyca/fides/releases/tag/2.83.2>

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.

## Check whether this affects you

A Match means an installed version is in the affected range above. Most don’t affect the app; agentprime hasn’t analysed this one yet.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), ask your agent to check the project: `check_lockfile` sends a lockfile, `check_packages` a list of installed packages, and both return the Matches and the upgrades that clear them. `get_advisory` returns this record. Setup: <https://agentprime.io/mcp.md>
- In a browser: <https://agentprime.io/check/> reads your lockfile in the browser, never uploading it.
- Whether it touches your code, with file and line: the Claude Code plugin, <https://agentprime.io/plugin.md>
- As JSON: <https://api.agentprime.io/v1/advisories/GHSA-qx5f-ghc2-7g5c>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

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The web page: <https://agentprime.io/advisories/GHSA-qx5f-ghc2-7g5c/>. Everything for agents: <https://agentprime.io/llms.txt>.