How severe is CVE-2026-26937?

CVE-2026-26937 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-26937 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-26937?

CVE-2026-26937 affects Elastic Kibana. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-26937?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-26937 have an EU (EUVD) identifier?

Yes. CVE-2026-26937 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-8872.

When was CVE-2026-26937 published?

CVE-2026-26937 was published on 2026-02-26 and last updated on 2026-06-17.

CVE-2026-26937

CVE-2026-26937 is a medium-severity vulnerability in Elastic Kibana with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-400.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (19th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-8872
Weakness: CWE-400
Affected product: Elastic Kibana
Published: 2026-02-26
Last modified: 2026-06-17

Description

Uncontrolled Resource Consumption (CWE-400) in the Timelion component in Kibana can lead Denial of Service via Input Data Manipulation (CAPEC-153)

Frequently asked questions

What is CVE-2026-26937?: Uncontrolled Resource Consumption (CWE-400) in the Timelion component in Kibana can lead Denial of Service via Input Data Manipulation (CAPEC-153)
How severe is CVE-2026-26937?: CVE-2026-26937 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-26937 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-26937?: CVE-2026-26937 affects Elastic Kibana. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-26937?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-26937 have an EU (EUVD) identifier?: Yes. CVE-2026-26937 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-8872.
When was CVE-2026-26937 published?: CVE-2026-26937 was published on 2026-02-26 and last updated on 2026-06-17.

References

https://discuss.elastic.co/t/kibana-8-19-11-9-2-5-security-update-esa-2026-15/385251

Affected products (1)

cpe:2.3:a:elastic:kibana:*:*:*:*:*:*:*:*

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