CVE-2026-72649 — Deserialization of Untrusted Data in Elasticsearch Leading to Remote Code Execution

CVE-2026-72649

Deserialization of Untrusted Data in Elasticsearch Leading to Remote Code Execution PUBLISHED

Description (CNA)

Deserialization of Untrusted Data (CWE-502) in the Elasticsearch machine learning component can lead to remote code execution via Object Injection (CAPEC-586). A specially crafted trained model artifact could cause attacker-controlled logic to execute with a materially broader system-call surface than intended. Exploitation requires an authenticated user with sufficient privileges to create and deploy trained models.

Affected (CNA)

Vendor / product	Versions
Elastic / Elasticsearch	affected 8.0.0 through 8.19.19; affected 9.0.0 through 9.4.4; affected 9.5.0

CWE

CWE-502

References

https://discuss.elastic.co/t/elasticsearch-8-19-20-9-4-5-9-5-1-security-update-esa-2026-114/390087

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.