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.
CVE-2026-49120
Score 8.5 from GitHub Security Advisory published 2026-06-02. a secondary CVSS source baseline 8.5; sources differ by 0.0.
- High severity, but no confirmed exploitation yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 8.5
- EG Score
- 8.5(medium)
- EG Risk
- 38(Track)EG Risk 38/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity85% × 45%Exploitation0% × 40%Automatability0% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 0%
- EPSS %ILE
- 14%
- KEV
- Not listed
Published
June 2, 2026
Last Modified
July 22, 2026
Advisory Details (4)
Auto-updated Jun 3, 2026Medplum < 5.1.14 SSRF via FHIR Subscription Endpoint | Advisories | VulnCheck
https://www.vulncheck.com/advisories/medplum-ssrf-via-fhir-subscription-endpointVersion 5.1.14
Patch available: medplum/medplum v5.1.14
https://github.com/medplum/medplum/releases/tag/v5.1.14Require HTTPS for rest-hook Subscription URLs by default
Fix merged in medplum/medplum PR #9334 on 2026-05-29 — awaiting tagged release
https://github.com/medplum/medplum/pull/9334commit 87595e98d756 (medplum/medplum)
Fix landed in medplum/medplum commit 87595e98d756 — awaiting tagged release
https://github.com/medplum/medplum/commit/87595e98d756d840d70d9dc87beb9d4f9e158b59Vendor Advisories for CVE-2026-49120(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 10× in last 7d / 56× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
Showing the most recent 100 of 134 total refreshes for this CVE.
- 2026-07-26 22:52 UTCEG score recompute
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Related CVEs(same CWE)
Same CWE
10 shownCWE-918
- CVE-2016-10927EG 10.0CRITICAL
- CVE-2016-10926EG 10.0CRITICAL
- CVE-2018-14721EG 10.0EPSS p95CRITICAL
- CVE-2018-18843EG 10.0CRITICAL
- CVE-2018-19047EG 10.0CRITICAL
- CVE-2018-10511EG 10.0CRITICAL
- CVE-2018-3774EG 10.0CRITICAL
- CVE-2018-1000124EG 10.0CRITICAL
- CVE-2017-13667EG 9.9CRITICAL
- CVE-2018-1789NVD 8.4EG 9.9CRITICAL
Frequently asked(5)
What is CVE-2026-49120?
When was CVE-2026-49120 disclosed?
Is CVE-2026-49120 actively exploited?
What is the CVSS score of CVE-2026-49120?
How do I remediate CVE-2026-49120?
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-49120
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