CVE-2026-56143

Allocation of Resources Without Limits or Throttling (CWE-770) in Elasticsearch can lead to a denial of service via Excessive Allocation (CAPEC-130). A user with elevated privileges can submit a specially crafted request that causes excessive memory consumption, which may render the affected node unavailable.

Database specific

{
    "cwe_ids": [
        "CWE-770"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56143.json",
    "unresolved_ranges": [
        {
            "source": "AFFECTED_FIELD",
            "extracted_events": [
                {
                    "introduced": "8.0.0"
                },
                {
                    "last_affected": "8.19.19"
                },
                {
                    "introduced": "9.0.0"
                },
                {
                    "last_affected": "9.2.8"
                }
            ]
        }
    ],
    "cna_assigner": "elastic"
}

References

Affected packages

Git / github.com/elastic/elasticsearch

Affected ranges

Type

GIT

Repo

https://github.com/elastic/elasticsearch

Events

Introduced

1b6a7ece17463df5ff54a3e1302d825889aa1161

Fixed

91f5381ece296ddc32b554f997269478b9224af8

Introduced

112859b85d50de2a7e63f73c8fc70b99eea24291

Fixed

17b451d8979a29e31935fe1eb901310350b30e62

Database specific

Show details

{
    "cpe": "cpe:2.3:a:elastic:elasticsearch:*:*:*:*:*:*:*:*",
    "source": "CPE_RANGE",
    "extracted_events": [
        {
            "introduced": "8.0.0"
        },
        {
            "fixed": "8.19.20"
        },
        {
            "introduced": "9.0.0"
        },
        {
            "fixed": "9.3.0"
        }
    ]
}

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-56143.json"