6.5

CVE-2026-72686

Uncontrolled Recursion in Elasticsearch Leading to Denial of Service

A flaw in Elasticsearch allows a low-privileged authenticated user to submit a single request containing a crafted user-supplied input. A specific internal component validates the input using a recursive routine and applies no bound to the length of the value being validated, so the validation causes the thread to exhaust its stack. The resulting fatal error is not handled by the surrounding execution paths and terminates the affected node process, producing a denial of service.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Elastic ≫ Elasticsearch Version >= 8.0.0 < 8.19.20
Elastic ≫ Elasticsearch Version >= 9.0.0 < 9.4.5
Elastic ≫ Elasticsearch Version >= 9.5.0 < 9.5.1
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.36% 0.289
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
security@elastic.co 6.5 2.8 3.6
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-674 Uncontrolled Recursion

The product does not properly control the amount of recursion that takes place, consuming excessive resources, such as allocated memory or the program stack.

https://discuss.elastic.co/t/elasticsearch-8-19-20-9-4-5-9-5-1-security-update-esa-2026-78/389505
Vendor Advisory