Authenticated cross-space writes via migration authorization bypass
Published Sep 3, 2026 · Updated Sep 3, 2026
Missing authorization in Entity Analytics migrations in Elastic Kibana allows remote authenticated users to modify data across spaces. The migration operations accept Security read-level authority from one space but perform privileged writes across every space without enforcing that scope. Entity Analytics must have been initialized in at least one space; multi-space deployments expose broader unauthorized modification.
Summary
What happened
Missing authorization in Entity Analytics migrations in Elastic Kibana allows remote authenticated users to modify data across spaces. The migration operations accept Security read-level authority from one space but perform privileged writes across every space without enforcing that scope. Entity Analytics must have been initialized in at least one space; multi-space deployments expose broader unauthorized modification.
The record
- CVE
- CVE-2026-78596
- Published
- Sep 3, 2026
- Updated
- Sep 3, 2026
- Vendor
- Elastic
- Product
- Kibana
- Classifications
- CWE-862, CAPEC-122, T1078
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Sep 3, 2026CVE publishedPublication date reported by the CVE source.
- Sep 3, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=8.18.3 <=8.19.20
- Affected versionversion=9.0.3 <=9.4.5
- Affected versionversion=9.5.0 <=9.5.2
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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