What is CVE-2026-113873?

CVE-2026-113873 is a high-severity vulnerability, classified under Improper Handling of Highly Compressed Data (Data Amplification). CVSS score: 7.5/10. Published 2026-10-22.

How severe is CVE-2026-113873?

High severity. CVSS v3 base score is 7.5 out of 10.

CVE-2026-113873

CVE-2026-113873

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.

Published 2026-10-22.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Weakness classification (CWE)

CWE-409 — Improper Handling of Highly Compressed Data (Data Amplification)

References

9119a7d8-5eab-497f-8521-727c672e3725 (third-party-advisory)
9119a7d8-5eab-497f-8521-727c672e3725 (vdb-entry)

Frequently asked questions

What is CVE-2026-113873?: CVE-2026-113873 is a high-severity vulnerability, classified under Improper Handling of Highly Compressed Data (Data Amplification). CVSS score: 7.5/10. Published 2026-10-22.
How severe is CVE-2026-113873?: High severity. CVSS v3 base score is 7.5 out of 10.