CVE-2026-63259 — MEDIUM (4.3)

Q: How severe is CVE-2026-63259?

CVE-2026-63259 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-63259?

Check the references section above for vendor advisories and patch information. Affected products include: Elastic Kibana.

Vulnerability Description

Authorization Bypass Through User-Controlled Key (CWE-639) in Kibana can lead to information disclosure via user-supplied identifiers that reference scheduled query result data from Kibana Spaces the requester is not authorized to access.

CVSS Score

4.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

NONE

Availability

NONE

Affected Products

Vendor	Product	Versions
Elastic	Kibana	>= 9.4.0, < 9.4.4

Related Weaknesses (CWE)

CWE-639

References

https://discuss.elastic.co/t/kibana-9-4-4-security-update-esa-2026-70/388573Vendor Advisory

FAQ

What is CVE-2026-63259?

CVE-2026-63259 is a vulnerability with a CVSS score of 4.3 (MEDIUM). Authorization Bypass Through User-Controlled Key (CWE-639) in Kibana can lead to information disclosure via user-supplied identifiers that reference scheduled query result data from Kibana Spaces the ...

How severe is CVE-2026-63259?

CVE-2026-63259 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-63259?

Check the references section above for vendor advisories and patch information. Affected products include: Elastic Kibana.