CVE-2026-49120

medium

Description

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.

References

https://www.vulncheck.com/advisories/medplum-ssrf-via-fhir-subscription-endpoint

https://github.com/medplum/medplum/releases/tag/v5.1.14

https://github.com/medplum/medplum/pull/9334

https://github.com/medplum/medplum/commit/87595e98d756d840d70d9dc87beb9d4f9e158b59

Details

Source: Mitre, NVD

Published: 2026-06-02

Updated: 2026-06-02

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:P/A:N

Severity: High

CVSS v3

Base Score: 8.5

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N

Severity: High

CVSS v4

Base Score: 6.3

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:H/SI:L/SA:N

Severity: Medium

EPSS

EPSS: 0.00028