CVE-2026-113873

SmileCDR HAPI FHIR improper data decompression

HIGH

7.5

CVSS Score

Published: October 22, 2026 at 05:57 PM UTC

Updated: October 26, 2026 at 12:57 PM UTC

1 product affected across 1 vendorHAPI FHIR

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Severity

HIGH7.5

Exploit prediction

EPSS 0.5%

SSVC

No known exploit

Description

SmileCDR HAPI FHIR does not properly handle highly compressed data, allowing an unauthenticated attacker to send compressed payloads that exhaust server heap or crash certain services when decompressed.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

HAPI FHIR · SmileCDR

100%

All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (3)

Third Party Advisory

Source: cverecord

https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-294-01.json

VDB Entry

Source: cverecord

https://www.cve.org/CVERecord?id=CVE-2026-113873

Third Party Advisory

Source: cverecord

https://abhinavagarwal07.github.io/posts/hapi-fhir-authorization-findings/

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHcisa-cg

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: NONE
Integrity: NONE
Availability: HIGH

Vector?

Quick Info

StatusAWAITING ANALYSIS

CWE

CWE-409

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