CVE-2026-26937Network attack vector

Authenticated service crash via Timelion input manipulation

Published Feb 26, 2026 · Updated Feb 26, 2026

Resource exhaustion in Elastic Kibana 8.0.0 through 8.19.10 and 9.0.0 through 9.2.4 allows remote authenticated users to crash Kibana. Elastic identifies input-data manipulation in the Timelion component but has not published the resource-consuming operation or crafted input that triggers it. An authenticated user must reach Timelion, a legacy visualization feature enabled by default, and successful exploitation interrupts Kibana availability.

CVSS severity6.5
Medium
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource exhaustion in Elastic Kibana 8.0.0 through 8.19.10 and 9.0.0 through 9.2.4 allows remote authenticated users to crash Kibana. Elastic identifies input-data manipulation in the Timelion component but has not published the resource-consuming operation or crafted input that triggers it. An authenticated user must reach Timelion, a legacy visualization feature enabled by default, and successful exploitation interrupts Kibana availability.

The record

CVE
CVE-2026-26937
Published
Feb 26, 2026
Updated
Feb 26, 2026
Vendor
Elastic
Product
Kibana
Classifications
CWE-400, CAPEC-153, T1499.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 26, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=8.0.0 <=8.19.10
  2. Affected versionversion=9.0.0 <=9.2.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Elastic · Kibanaversion=8.0.0 <=8.19.10; version=9.0.0 <=9.2.4

Published CVSS scores

6.5ElasticCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-400Uncontrolled Resource Consumption
CAPEC-153Input Data Manipulation
T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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