How severe is CVE-2026-63143?

CVE-2026-63143 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2026-63143 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-63143?

CVE-2026-63143 affects Elastic Kibana. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-63143?

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

When was CVE-2026-63143 published?

CVE-2026-63143 was published on 2026-07-21 and last updated on 2026-08-03.

CVE-2026-63143

CVE-2026-63143 is a medium-severity vulnerability in Elastic Kibana with a CVSS 3.x base score of 4.3. 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-862.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
EPSS exploit prediction: 0% (25th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-862
Affected product: Elastic Kibana
Published: 2026-07-21
Last modified: 2026-08-03

Description

Missing Authorization (CWE-862) in Kibana can lead to unauthorized information disclosure via Privilege Abuse (CAPEC-122). A user with limited feature privileges can access workflow execution outputs in their Kibana space without the authorization required to do so through the documented API. The accessible data may include sensitive information returned by workflow steps, such as results from connected data sources that the caller would not otherwise be authorized to access.

Frequently asked questions

What is CVE-2026-63143?: Missing Authorization (CWE-862) in Kibana can lead to unauthorized information disclosure via Privilege Abuse (CAPEC-122). A user with limited feature privileges can access workflow execution outputs in their Kibana space without the authorization required to do so through the documented API. The accessible data may include sensitive information returned by workflow steps, such as results from connected data sources that the caller would not otherwise be authorized to access.
How severe is CVE-2026-63143?: CVE-2026-63143 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2026-63143 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-63143?: CVE-2026-63143 affects Elastic Kibana. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-63143?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2026-63143 published?: CVE-2026-63143 was published on 2026-07-21 and last updated on 2026-08-03.

References

https://discuss.elastic.co/t/kibana-9-3-8-9-4-4-security-update-esa-2026-67/388569

Affected products (1)

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

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