Server-side Request Forgery (SSRF) Affecting ca.uhn.hapi.fhir:org.hl7.fhir.utilities package, versions [,6.9.4)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published31 Mar 2026
- disclosed30 Mar 2026
- creditoffset
Introduced: 30 Mar 2026
CVE-2026-34360 (opens in a new tab)How to fix?
Upgrade ca.uhn.hapi.fhir:org.hl7.fhir.utilities to version 6.9.4 or higher.
Overview
Affected versions of this package are vulnerable to Server-side Request Forgery (SSRF) via the /loadIG endpoint, which accepts user-supplied URLs and makes server-side HTTP requests without proper validation of hostnames, schemes, or domains. An attacker can probe internal network services, access cloud metadata endpoints, and map internal network topology by submitting crafted URLs, leveraging error-based information leakage to differentiate between open and closed ports or reachable and unreachable hosts. Redirects are followed without re-validation, allowing bypass of domain restrictions.