HAPI FHIR flaws allow cross-tenant reads, writes and gzip exhaustion
CISA issued four CVEs and CSAF advisory VA-26-294-01; a researcher reproduced all four on HAPI FHIR 8.10.0.
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CVE-2026-113876
- CVSS 4.0
- 5.3 medium
- EPSS
- —
- Published
- ·
- Modified
Description · NVD
SmileCDR HAPI FHIR does not correctly check authorization for conditional create actions. A user with CREATE but not READ permissions could submit a conditional create whose predicate matches an existing resource and receive the target resource's contents.
- Weakness
- CWE-863
- Vector
- CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X