Is there a public exploit for CVE-2026-113873?

No public exploit for CVE-2026-113873 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-113873?

CVE-2026-113873 scores CVSS 8.7 (v4.0), rated high. EPSS puts the chance of exploitation in the next 30 days at 0.52%.

What does CVE-2026-113873 affect?

CVE-2026-113873 affects SmileCDR HAPI FHIR.

8.7 High

SmileCDR HAPI FHIR does not properly handle highly compressed data, allowing an unauthenticated attacker to send compressed payloads that…

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.

Assessment

CVSS: 8.7 (v4.0)
Severity: High
EPSS: 0.52% chance of exploitation in the next 30 days
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 22 October 2026
Last updated: 6 November 2026
Affected: SmileCDR · HAPI FHIR
Assigner: cisa-cg

CVSS vectorCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

At the source

EUVD (ENISA)

References

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