CVE-2026-42399

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Source
https://cve.org/CVERecord?id=CVE-2026-42399
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-42399.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-42399
Aliases
Downstream
Published
2026-05-28T19:44:05.732Z
Modified
2026-06-26T03:55:24.437687831Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
Uncontrolled Resource Consumption in Kibana Leading to Denial of Service
Details

Uncontrolled Resource Consumption (CWE-400) in Kibana can lead to denial of service via Excessive Allocation (CAPEC-130). An authenticated low-privileged user can cause Kibana to consume exponentially increasing amounts of memory by submitting a specially crafted Timelion visualization expression containing deeply chained function calls. The resulting data structure grows without bound, exhausting available memory and causing the Kibana service to crash and become unavailable to all users.

Database specific 
{
    "cna_assigner": "elastic",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42399.json",
    "unresolved_ranges": [
        {
            "source": "AFFECTED_FIELD",
            "extracted_events": [
                {
                    "introduced": "8.0.0"
                },
                {
                    "last_affected": "8.19.15"
                },
                {
                    "introduced": "9.0.0"
                },
                {
                    "last_affected": "9.3.4"
                }
            ]
        }
    ],
    "cwe_ids": [
        "CWE-400"
    ]
}
References

Affected packages

Git / github.com/elastic/elasticsearch

Affected ranges

Type
GIT
Repo
https://github.com/elastic/elasticsearch
Events
Introduced
1b6a7ece17463df5ff54a3e1302d825889aa1161
Fixed
0ecfe314ed6ddebb736091bf37b3b6758209b73b
Introduced
112859b85d50de2a7e63f73c8fc70b99eea24291
Fixed
7dcc32bebba091844c0207f9dae8fda6c7d08542
Database specific 
{
    "source": "CPE_RANGE",
    "extracted_events": [
        {
            "introduced": "8.0.0"
        },
        {
            "fixed": "8.19.16"
        },
        {
            "introduced": "9.0.0"
        },
        {
            "fixed": "9.3.5"
        }
    ],
    "cpe": "cpe:2.3:a:elastic:kibana:*:*:*:*:*:*:*:*"
}

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-42399.json"

Git / github.com/elastic/kibana

Affected ranges

Type
GIT
Repo
https://github.com/elastic/kibana
Events
Introduced
57ca5e139a33dd2eed927ce98d8231a1f217cd15
Fixed
209c12d77d1bf1bc561abff2b91aa95f354734a3
Introduced
504d6bfa94cca17fabb76e06152c30c4f0c3efdd
Fixed
db396449a69d0613b0b4dc8b8e9789aa35504e0f
Database specific 
{
    "source": "CPE_RANGE",
    "extracted_events": [
        {
            "introduced": "8.0.0"
        },
        {
            "fixed": "8.19.16"
        },
        {
            "introduced": "9.0.0"
        },
        {
            "fixed": "9.3.5"
        }
    ],
    "cpe": "cpe:2.3:a:elastic:kibana:*:*:*:*:*:*:*:*"
}

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-42399.json"