CVE-2026-72638

6.5 mediumEPSS 0.4%

Medium (6.5) in elastic elasticsearch. EPSS 0.4% chance of exploitation in the next 30 days.

Uncontrolled Recursion (CWE-674) in Elasticsearch can lead to denial of service via Input Data Manipulation (CAPEC-153). An authenticated user holding only low-privileged index creation permissions can submit a single request containing a specially crafted, malformed custom analysis definition that is resolved recursively without a cycle or depth check, exhausting the thread stack and terminating the affected node.

Severity

CVSS 3.1

6.5 medium

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

EPSS: 0.4% chance of exploitation in the next 30 days; higher than 36% of CVEs (scores of 2026-10-31)
CWE: CWE-674
Published: 2026-08-13
Modified: 2026-09-01
Record from: the NVD, synced 2026-10-19

Affected

elastic:elasticsearch

References

https://discuss.elastic.co/t/elasticsearch-8-19-20-9-4-5-security-update-esa-2026-119/389498

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