CVE-2021-22150Network attack vector

Authenticated command execution via unsafe YAML loading

Published Nov 22, 2023 · Updated Dec 2, 2024

Code injection in Elastic Kibana 7.10.2 through 7.14.0 allows remote authenticated users to execute commands on the server. Fleet's package-upload path loads attacker-supplied package YAML with an outdated js-yaml library in an unsafe manner that permits executable object construction. Fleet administrator privileges are required, and successful exploitation grants command execution with the Kibana server process's permissions.

CVSS severity6.6
Medium
EPSS probability1.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in Elastic Kibana 7.10.2 through 7.14.0 allows remote authenticated users to execute commands on the server. Fleet's package-upload path loads attacker-supplied package YAML with an outdated js-yaml library in an unsafe manner that permits executable object construction. Fleet administrator privileges are required, and successful exploitation grants command execution with the Kibana server process's permissions.

The record

CVE
CVE-2021-22150
Published
Nov 22, 2023
Updated
Dec 2, 2024
Vendor
Elastic
Product
Kibana
Classifications
CWE-94
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Nov 22, 2023CVE publishedPublication date reported by the CVE source.
  2. Dec 2, 2024Record 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=7.10.2 <7.14.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Elastic · Kibanaversion=7.10.2 <7.14.0

Published CVSS scores

6.6ElasticCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
7.2NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

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-94Improper Control of Generation of Code ('Code Injection')

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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