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CVE-2026-49120

8.5 · 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 F…

Published Jun 2, 2026CWE-918EPSS 0.37%

Overview

CVE-2026-49120 is a high-severity vulnerability. It was published on June 2, 2026 and has a CVSS 3.1 base score of 8.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.5, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/medplum/medplum/commit/87595e98d756d840d70d9dc87beb9d4f9e158b59GitHubgithub.com/medplum/medplum/pull/9334GitHubgithub.com/medplum/medplum/releases/tag/v5.1.14Refwww.vulncheck.com/advisories/medplum-ssrf-via-fhir-subscription-endpoint

How CyberStrike helps

Frequently asked questions

What is CVE-2026-49120?

CVE-2026-49120 is a high-severity vulnerability. It was published on June 2, 2026 and has a CVSS 3.1 base score of 8.5 (HIGH).

How severe is CVE-2026-49120?

This vulnerability has a CVSS 3.1 base score of 8.5, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-49120?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-49120?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-49120 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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