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CVE-2026-113873— SmileCDR HAPI FHIR improper data decompression

Quick assessment

Affected
SmileCDR HAPI FHIR
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

SmileCDR HAPI FHIR 无法正确处理高度压缩的数据，这使得未经身份验证的攻击者能够发送压缩负载，在解压缩时耗尽服务器堆内存或导致某些服务崩溃。

CVSS 7.5 · High

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 1

VendorProduct Version RangeStatus
SmileCDR HAPI FHIR < * affected
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I. Basic Information for CVE-2026-113873

Vulnerability Information
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Vulnerability Title
SmileCDR HAPI FHIR improper data decompression
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对高度压缩数据的处理不恰当(数据放大攻击)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
SmileCDR HAPI FHIR 0 ~ * -

II. Public POCs for CVE-2026-113873

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-113873

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Vendor Advisories for CVE-2026-113873 (1)

Other References for CVE-2026-113873 (1)

Same Patch Batch · SmileCDR · 2026-10-22 · 4 CVEs total

CVE-2026-113874 8.1 HIGH SmileCDR HAPI FHIR trusted tenant partition override
CVE-2026-113876 4.3 MEDIUM SmileCDR HAPI FHIR unauthorized read
CVE-2026-113875 3.1 LOW SmileCDR HAPI FHIR unauthorized read via subscription

IV. Related Vulnerabilities

Same product: HAPI FHIR
Same vendor: SmileCDR
Same weakness: CWE-409

V. Comments for CVE-2026-113873

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