6.5
Medium
CVE-2026-56148 Uncontrolled Recursion (CWE-674) in Elasticsearch can lead to a denial of service via Excessive Allocation (CAPEC-130)
Description
Uncontrolled Recursion (CWE-674) in Elasticsearch can lead to a denial of service via Excessive Allocation (CAPEC-130). An authenticated user can submit a specially crafted query that causes excessive resource consumption while the request is processed, which may render the affected node unavailable.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Elasticsearch 9.4 | 9.4.0 → 9.4.2 | No fix stated |
| Elasticsearch 9.0 | 9.0.0 → 9.3.5 | No fix stated |
| Elasticsearch 8.0 | 8.0.0 → 8.19.16 | No fix stated |
Other CVEs of Elasticsearch
The 91 CVEs of Elasticsearch →
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6.5
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Use of Cache Containing Sensitive Information (CWE-524) in Elasticsearch can lead to information disclosure and…
4.2
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CVE-2026-115298
Incorrect Authorization (CWE-863) in Elasticsearch can lead to information disclosure via Accessing Functionality Not…
4.3
Medium
CVE-2026-115290
Uncontrolled Recursion (CWE-674) in Elasticsearch can lead to denial of service via Serialized Data with Nested Payloads…
7.5
High