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CVE-2026-63259

Authorization Bypass Through User-Controlled Key in Kibana Leading to Information Disclosure

MEDIUM
4.3
CVSS Score
Published: July 21, 2026 at 10:37 PM UTC
Updated: October 24, 2026 at 05:10 PM UTC
1 product affected across 1 vendorKibana

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Severity
MEDIUM4.3
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Kibana· Elasticsearch
95%
9.4.0 ≤ v < 9.4.49.4.0
Affected range stops below 9.4.4, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

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

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.3MEDIUMelastic
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-639

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