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Public proof of conceptFix available

CVE-2021-22146

A public proof of concept exists; no exploitation attested.

  • Published2021-07-21

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

All versions of Elastic Cloud Enterprise has the Elasticsearch “anonymous” user enabled by default in deployed clusters. While in the default setting the anonymous user has no permissions and is unable to successfully query any Elasticsearch APIs, an attacker could leverage the anonymous user to gain insight into certain details of a deployed cluster.

Timeline

dates in UTC
  1. 2021-07-2115:15CVE publishedNVD
  2. 2021-07-26Exploit-DB entryExploit-DB

Observed activity

isMalicious corpus · updated 2026-11-03 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2021-22146?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-22146?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD · OSV
Elasticsearch
BranchAffectedFixed in
7.13= 7.13.3no fix published
elasticsearch
BranchAffectedFixed in
7.13≥ 7.13.3, < 7.13.47.13.4

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Advisories and patches

Detection

read 2026-11-03 22:42 UTC
Nuclei template
none so far
ProjectDiscovery
Exploit-DB
EDB-50152
Exploit-DB
Proof-of-concept repositories
1 repository, unverifiedmagichk/cve-2021-22146
PoC-in-GitHub
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Published
2021-07-21
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2021-22146?

All versions of Elastic Cloud Enterprise has the Elasticsearch “anonymous” user enabled by default in deployed clusters. While in the default setting the anonymous user has no permissions and is unable to successfully query any Elasticsearch APIs, an attacker could leverage the anonymous user to gain insight into certain details of a deployed cluster.

Is CVE-2021-22146 actively exploited?

Active exploitation of CVE-2021-22146 has not been confirmed. Its EPSS score was 35.8% on 2026-11-03, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-22146?

CVE-2021-22146 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

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Sources for this record