CVE-2026-49120CWE-918

Medplum < 5.1.14 SSRF via FHIR Subscription Endpoint

Medium · published June 2, 2026

CVSS v4.0
6.3
EPSS
0%
Percentile
29.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
6.3 · MEDIUM
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
EPSS
0.00369 · 29.6th percentile
Weakness
CWE-918 · Server-Side Request Forgery (SSRF)
Published
2026-06-02T18:05Z
EPSS history
Timeline
  • 02 JUN 18:05Z
    Medplum < 5.1.14 SSRF via FHIR Subscription Endpoint
    cvelistv5