CVEvulnerability

CVE-2026-63140

6.5 MEDIUM Published 2026-07-21 Modified 2026-10-24 Official page ↗
Status
Analyzed
Published
2026-07-21
Last modified
2026-10-24
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-617

Description

Reachable Assertion (CWE-617) in Elasticsearch can lead to denial of service via Input Data Manipulation (CAPEC-153). A specially crafted search request containing a null value in a specific query clause causes an internal assertion to be raised during query parsing. Because Elasticsearch treats assertion failures as fatal errors, this terminates the affected node process. A low-privileged authenticated user with read access to at least one index can exploit this condition with a single request to cause a node to terminate, disrupting search availability. In a single-node deployment this fully stops Elasticsearch; in a multi-node cluster it reduces cluster capacity for each affected node.

Affected configurations

• elastic elasticsearch (>= 8.0.0 < 8.19.19) • elastic elasticsearch (>= 9.0.0 < 9.3.8) • elastic elasticsearch (>= 9.4.0 < 9.4.4)

Related

Weakness · CWE (1)

  • CWE-617 Reachable Assertion weakness

References