CVE-2020-7012

Authenticated code execution via Upgrade Assistant prototype pollution

Published Jun 3, 2020 · Updated Aug 4, 2024

Prototype pollution in Elastic Kibana 6.7.0 through 6.8.8 and 7.0.0 through 7.6.2 allows remote authenticated users to execute code. Elastic has not published the specific function or unsafe object operation; the disclosed locus is Upgrade Assistant handling of attacker-inserted Kibana-index data. Exploitation requires elevated index-write privileges and Upgrade Assistant processing, and resulting code runs with the Kibana process's permissions.

CVSS severity6.6
Medium
EPSS probability18.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Prototype pollution in Elastic Kibana 6.7.0 through 6.8.8 and 7.0.0 through 7.6.2 allows remote authenticated users to execute code. Elastic has not published the specific function or unsafe object operation; the disclosed locus is Upgrade Assistant handling of attacker-inserted Kibana-index data. Exploitation requires elevated index-write privileges and Upgrade Assistant processing, and resulting code runs with the Kibana process's permissions.

The record

CVE
CVE-2020-7012
Published
Jun 3, 2020
Updated
Aug 4, 2024
Vendor
Elastic
Product
Kibana
Classifications
CWE-94
Attack vector
adjacent
Privileges
admin

Timeline

How it unfolded

  1. Jun 3, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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=6.7.0 to 6.8.8 and 7.0.0 to 7.6.2

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesadmin

What is affected?

Elastic · Kibanaversion=6.7.0 to 6.8.8 and 7.0.0 to 7.6.2

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
6.5NIST NVDAV:N/AC:L/Au:S/C:P/I:P/A:P
6.6ElasticCVSS:3.0/AV:A/AC:L/PR:H/UI:R/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
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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