CVE-2026-72636 (GCVE-0-2026-72636)

Vulnerability from cvelistv5 – Published: 2026-08-13 19:14 – Updated: 2026-08-13 20:26
VLAI
Title
Uncontrolled Recursion in Elasticsearch Wildcard Matching Leading to Denial of Service
Summary
Uncontrolled Recursion (CWE-674) in the Elasticsearch wildcard matching helper can lead to a denial of service via Excessive Allocation (CAPEC-130). The matcher used to resolve wildcard patterns against names is implemented recursively and had no bound on recursion depth or on the total number of match operations performed. A search request containing a wildcard pattern with a large number of wildcard groups, evaluated against a sufficiently long name, exhausts the thread stack. Elasticsearch treats a stack overflow as an unrecoverable condition and shuts the node down, so the request terminates the affected node rather than failing gracefully.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 19:29 UTC
CWE
Assigner
elastic CNA under the mitre root
CNA scorecard C 69/100 over 155 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Elastic Elasticsearch Affected: 8.0.0 , ≤ 8.19.19 (semver)
Affected: 9.0.0 , ≤ 9.4.4 (semver)
guessed Create a notification for this product.
Show details on NVD website
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