How severe is CVE-2026-4498?

CVE-2026-4498 has a CVSS 3.x base score of 7.7, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-4498 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-4498?

CVE-2026-4498 affects Elastic Kibana. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-4498?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-4498 have an EU (EUVD) identifier?

Yes. CVE-2026-4498 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-20528.

When was CVE-2026-4498 published?

CVE-2026-4498 was published on 2026-04-08 and last updated on 2026-06-17.

CVE-2026-4498

CVE-2026-4498 is a high-severity vulnerability in Elastic Kibana with a CVSS 3.x base score of 7.7. 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-250.

Key facts

Severity: High (CVSS 3.x base score 7.7)
EPSS exploit prediction: 0% (22nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-20528
Weakness: CWE-250
Affected product: Elastic Kibana
Published: 2026-04-08
Last modified: 2026-06-17

Description

Execution with Unnecessary Privileges (CWE-250) in Kibana’s Fleet plugin debug route handlers can lead reading index data beyond their direct Elasticsearch RBAC scope via Privilege Abuse (CAPEC-122). This requires an authenticated Kibana user with Fleet sub-feature privileges (such as agents, agent policies, and settings management).

Frequently asked questions

What is CVE-2026-4498?: Execution with Unnecessary Privileges (CWE-250) in Kibana’s Fleet plugin debug route handlers can lead reading index data beyond their direct Elasticsearch RBAC scope via Privilege Abuse (CAPEC-122). This requires an authenticated Kibana user with Fleet sub-feature privileges (such as agents, agent policies, and settings management).
How severe is CVE-2026-4498?: CVE-2026-4498 has a CVSS 3.x base score of 7.7, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-4498 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-4498?: CVE-2026-4498 affects Elastic Kibana. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-4498?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-4498 have an EU (EUVD) identifier?: Yes. CVE-2026-4498 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-20528.
When was CVE-2026-4498 published?: CVE-2026-4498 was published on 2026-04-08 and last updated on 2026-06-17.

References

https://discuss.elastic.co/t/kibana-8-19-14-9-2-8-9-3-3-security-update-esa-2026-21/385811

Affected products (1)

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

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