CVE-2026-78607

7.1 highEPSS 0.3%

High (7.1) in elastic elasticsearch. EPSS 0.3% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

7.1 high

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N

EPSS: 0.3% chance of exploitation in the next 30 days; higher than 25% of CVEs (scores of 2026-10-31)
CWE: CWE-862
Published: 2026-09-01
Modified: 2026-09-02
Record from: the NVD, synced 2026-10-19

Affected

elastic:elasticsearch

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

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