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CVE-2026-49120

Medplum < 5.1.14 SSRF via FHIR Subscription Endpoint

Published: Jun 2, 2026Updated: Jun 2, 2026 Sources: CVE List
NVD MITRE
8.5CVSS
HIGH

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.

EPSS Score
N/A
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:CC:HI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:LIntegrity
Low
A:NAvailability
None

Weaknesses

CWE-918Server-Side Request Forgery (SSRF)

Affected Products

medplum
medplum

Attack Graph

Products CVE Techniques Tactics

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Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

2 techniques
Command and Control
Initial Access
View detailed technique mapping

References

https://github.com/medplum/medplum/releases/tag/v5.1.14
github.com
https://github.com/medplum/medplum/pull/9334
github.com
https://github.com/medplum/medplum/commit/87595e98d756d840d70d9dc87beb9d4f9e158b59
github.com
and 1 more references View all →

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