CVE-2026-78607 — Missing Authorization in Elasticsearch Leading to Information Disclosure

CVE-2026-78607

Missing Authorization in Elasticsearch Leading to Information Disclosure PUBLISHED

Description (CNA)

Missing Authorization (CWE-862) in the Elasticsearch custom inference service can lead to information disclosure via Privilege Abuse (CAPEC-122). A user holding only inference execution privileges could cause outbound inference traffic to be directed to a destination of their choosing and could cause administrator-provisioned credentials to be exposed.

Affected (CNA)

Vendor / product	Versions
Elastic / Elasticsearch	affected 8.0.0 through 8.19.18; affected 9.0.0 through 9.3.7; affected 9.4.0 through 9.4.3; affected 9.5.0

CWE

CWE-862

References

https://discuss.elastic.co/t/elasticsearch-8-19-19-9-3-8-9-4-4-9-5-1-security-update-esa-2026-143/390094

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.