CVE-2026-47663 Pathling: Typed CRUD/search/batch providers can lead to server-wide PHI exfiltration and cross-resource mutation
Authenticated users can bypass per-resource authorization checks to exfiltrate PHI or modify data across resource families in Pathling Server.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-47663?
CVE-2026-47663 is a high-severity missing authorization vulnerability in aehrc pathling, published on 7 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Pathling is a set of tools that make it easier to use FHIR and clinical terminology within health data analytics. Prior to version 2.0.0 of Pathling Server, Pathling's typed CRUD/search/batch FHIR surface allows an authenticated caller with only coarse operation authorities to act on attacker-chosen resource families because those entrypoints do not consistently enforce the documented per-resource `read` and `write` authorities. The documented authorization model requires an operation authority (e.g. `pathling:search`) to be paired with the matching per-resource `read` or `write` authority (e.g. `pathling:read:Patient`). Delete and batch are documented to require write authority for all referenced resource types. However, typed search, update, and related handlers are annotated only with `@OperationAccess(...)` and act on the provider-selected resource type without checking the corresponding per-resource authority. This is fixed in Pathling Server 2.0.0.
Weakness: CWE-285
Which versions are affected by CVE-2026-47663?
How do I fix CVE-2026-47663?
No fix has been published for CVE-2026-47663 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-47663 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-47663 exists.
Sources
Also known as GHSA-q62q-2m46-r7rv.