CVE-2026-47660

Pathling: Explicit oauthMetadataUrl in bulk-submit allows OAuth client credential exfiltration

State: Published
Severity: 8.7 High
Published: Aug 7, 2026
Updated: Aug 7, 2026
Reserved: May 19, 2026

Description

Pathling is a set of tools that make it easier to use FHIR and clinical terminology within health data analytics. Prior to version 2.0.0 of Pathling Server, Pathling's bulk-submit operation allows an allowed submitter to supply an explicit `oauthMetadataUrl` parameter that is not validated against `pathling.bulkSubmit.allowableSources`. When present, the bulk-submit OAuth flow trusts metadata and the returned `token_endpoint` from the caller-chosen location, then builds outbound OAuth client authentication directly from the submitter's stored credentials. This is fixed in Pathling Server 2.0.0.

Scores

CVSS	Score	Vector	Source
4.0	8.7 High	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N	GitHub_M

Weaknesses

CWE-522 Insufficiently Protected Credentials
CWE-918 Server-Side Request Forgery (SSRF)

Affected Products

Product	Versions
pathlingaehrc	< 2.0.0Affected

References

https://github.com/aehrc/pathling/security/advisories/GHSA-245h-c573-9vr5

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