CVEvulnerability

CVE-2026-72636

6.5 MEDIUM Published 2026-08-13 Modified 2026-09-01 Official page ↗
Status
Analyzed
Published
2026-08-13
Last modified
2026-09-01
Assigner
[email protected]
CVSS 3.1 ([email protected])
6.5 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-674

Description

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.

Affected configurations

• elastic elasticsearch (>= 8.0.0 < 8.19.20) • elastic elasticsearch (>= 9.0.0 < 9.4.5)

Related

Weakness · CWE (1)

  • CWE-674 Uncontrolled Recursion weakness

References