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CVE-2026-0528

Improper Input Validation in Metricbeat Leading to Denial of Service

Published: Jan 13, 2026Updated: Jan 22, 2026 Sources: CVE List NVD GHSACWE-129
NVD MITRE
6.5CVSSMEDIUM
EPSS Score
0.3%
Top 75.7%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

Improper Validation of Array Index (CWE-129) exists in Metricbeat can allow an attacker to cause a Denial of Service through Input Data Manipulation (CAPEC-153) via specially crafted, malformed payloads sent to the Graphite server metricset or Zookeeper server metricset. Additionally, Improper Input Validation (CWE-20) exists in the Prometheus helper module that can allow an attacker to cause a Denial of Service through Input Data Manipulation (CAPEC-153) via specially crafted, malformed metric data.

CVSS Vector Breakdown

AV:AAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:AAttack Vector
Adjacent
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-129

Affected Products

MetricbeatElasticDatabases
kibanaelasticDatabases
github.com/elastic/beats/v7GoOSS Libraries
elasticcommercialUSDatabasesaka elasticsearch co., elastic.co
gopackage-ecosystemOSS Libraries

Exploitability

Official Patch Available

References

https://discuss.elastic.co/t/metricbeat-8-19-10-9-1-10-9-2-4-security-update-esa-2026-01/384519
discuss.elastic.co
https://nvd.nist.gov/vuln/detail/CVE-2026-0528
nvd.nist.gov
https://github.com/elastic/beats/commit/0025fbfe668936eb8fa65b838508faf3c3c04387
github.com
and 3 more references View all →

Timeline

Published
Jan 13, 2026
Last Updated
Jan 22, 2026

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