CVE-2026-49095Network attack vector

Privilege escalation via configuration override injection

Published May 28, 2026 · Updated May 28, 2026

Improper input validation in Elastic Kibana affected releases allows remote authenticated users to elevate Elasticsearch privileges. The policy override accepts injected values without adequate validation in 8.0.0 through 8.19.15, 9.0.0 through 9.3.4, and 9.4.0 through 9.4.1, causing agents to receive overprivileged API keys. Exploitation requires Fleet to be enabled and fleet-all application privilege, and it grants unauthorized read and write access to sensitive security indices.

CVSS severity6.5
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in Elastic Kibana affected releases allows remote authenticated users to elevate Elasticsearch privileges. The policy override accepts injected values without adequate validation in 8.0.0 through 8.19.15, 9.0.0 through 9.3.4, and 9.4.0 through 9.4.1, causing agents to receive overprivileged API keys. Exploitation requires Fleet to be enabled and fleet-all application privilege, and it grants unauthorized read and write access to sensitive security indices.

The record

CVE
CVE-2026-49095
Published
May 28, 2026
Updated
May 28, 2026
Vendor
Elastic
Product
Kibana
Classifications
CWE-20, T1068
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. May 28, 2026CVE publishedPublication date reported by the CVE source.
  2. May 28, 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.

  1. Affected versionversion=8.0.0 <=8.19.15
  2. Affected versionversion=9.0.0 <=9.3.4
  3. Affected versionversion=9.4.0 <=9.4.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Elastic · Kibanaversion=8.0.0 <=8.19.15; version=9.0.0 <=9.3.4; version=9.4.0 <=9.4.1

Published CVSS scores

6.5ElasticCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation
T1068Exploitation for Privilege Escalation

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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