Description
Fides is an open-source privacy engineering platform. `fides.js`, a client-side script used to interact with the consent management features of Fides, used the `polyfill.io` domain in a very limited edge case, when it detected a legacy browser such as IE11 that did not support the fetch standard. Therefore it was possible for users of legacy, pre-2017 browsers who navigate to a page serving `fides.js` to download and execute malicious scripts from the `polyfill.io` domain when the domain was compromised and serving malware. No exploitation of `fides.js` via `polyfill.io` has been identified as of time of publication.

The vulnerability has been patched in Fides version `2.39.1`. Users are advised to upgrade to this version or later to secure their systems against this threat. On Thursday, June 27, 2024, Cloudflare and Namecheap intervened at a domain level to ensure `polyfill.io` and its subdomains could not resolve to the compromised service, rendering this vulnerability unexploitable. Prior to the domain level intervention, there were no server-side workarounds and the confidentiality, integrity, and availability impacts of this vulnerability were high. Clients could ensure they were not affected by using a modern browser that supported the fetch standard.
Published: 2024-07-02
Score: 0 Low
EPSS: 22.2% Moderate
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-cvw4-c69g-7v7m Inclusion of Untrusted polyfill.io Code Vulnerability in fides.js
History

Tue, 02 Sep 2025 20:30:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:ethyca:fides:*:*:*:*:*:*:*:*

cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2024-08-02T04:12:24.976Z

Reserved: 2024-06-18T16:37:02.729Z

Link: CVE-2024-38537

cve-icon Vulnrichment

Updated: 2024-07-02T20:11:41.164Z

cve-icon NVD

Status : Analyzed

Published: 2024-07-02T20:15:05.860

Modified: 2025-09-02T20:27:17.180

Link: CVE-2024-38537

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-07-12T22:23:44Z

Weaknesses