Medium severity · published May 13, 2021
CVE-2021-22139
Kibana versions before 7.12.1 contain a denial of service vulnerability was found in the webhook actions due to a lack of timeout or a limit on the request size
6.5
CVSS
1%
EPSS
No
On KEV
Description
Kibana versions before 7.12.1 contain a denial of service vulnerability was found in the webhook actions due to a lack of timeout or a limit on the request size. An attacker with permissions to create webhook actions could drain the Kibana host connection pool, making Kibana unavailable for all other users.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.0% · higher than 63% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KI
Kibana · Elastic
before 7.12.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-22139
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-22139
Vendor Advisory
https://discuss.elastic.co/t/7-12-1-security-update/271433
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