PT-2026-45843 · Medplum · Medplum

Katriel Moses + 1 · Published 2026-06-02 · Updated 2026-06-02 · CVE-2026-49120

Mitre

CVSS v3.1

8.5

High

Base vector

AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N

Medplum before 5.1.14 contains a server-side request forgery vulnerability in the subscription worker that allows authenticated users to perform unauthorized internal network requests by creating FHIR Subscription resources with arbitrary endpoint URLs. Attackers can point subscription endpoints at internal addresses such as cloud instance metadata services, internal databases, or container orchestration endpoints to exfiltrate IAM credentials and patient health records via the POST body containing full FHIR resource payloads.

Fix

SSRF

Weakness Enumeration

CWE-918

Related Identifiers

CVE-2026-49120

Affected Products

Medplum

References · 5

• https://github.com/medplum/medplum/commit/87595e98d756d840d70d9dc87beb9d4f9e158b59 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-49120 · Security Note
• https://github.com/medplum/medplum/pull/9334 · Note
• https://github.com/medplum/medplum/releases/tag/v5.1.14 · Note
• https://vulncheck.com/advisories/medplum-ssrf-via-fhir-subscription-endpoint · Note