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CVE-2026-78596

Missing Authorization in Kibana Leading to Unauthorized Cross-Space Write Operations

Medium4.3EPSS 0.27%
Published
Updated
Reserved
Assigned by
elastic

Description

Missing Authorization in Kibana Leading to Unauthorized Modification of Data / Missing Authorization (CWE-862) in Kibana can lead to unauthorized modification of data via Privilege Abuse (CAPEC-122). An authenticated user holding Security read-level access in a single Kibana space could trigger Entity Analytics migration operations that perform privileged writes across all Kibana spaces, regardless of that user's actual access scope.

Scores

CVSS scores of CVE-2026-78596, by who scored it
Scored byCVSSScoreVector
elasticCNA (assigner)3.1Medium4.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
NVDNVD · Awaiting Analysis3.1Medium4.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
EPSS (exploitation in 30 days)
0.27% · top 81% of all CVEs (4 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.3.

Weakness

Affected products

  • Elastic · Kibana

    • affected 8.18.3 – ≤ 8.19.20
    • affected 9.0.3 – ≤ 9.4.5
    • affected 9.5.0 – ≤ 9.5.2

References (1)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .