CVE-2026-0528

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 v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://discuss.elastic.co/t/metricbeat-8-19-10-9-1-10-9-2-4-security-update-esa-2026-01/384519	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:elastic:kibana::::::::
	cpe:2.3:a:elastic:kibana::::::::
	cpe:2.3:a:elastic:kibana::::::::
	cpe:2.3:a:elastic:kibana::::::::

History

22 Jan 2026, 19:57

Type	Values Removed	Values Added
First Time		Elastic Elastic kibana
CPE		cpe:2.3:a:elastic:kibana::::::::
References	~~() https://discuss.elastic.co/t/metricbeat-8-19-10-9-1-10-9-2-4-security-update-esa-2026-01/384519 -~~	() https://discuss.elastic.co/t/metricbeat-8-19-10-9-1-10-9-2-4-security-update-esa-2026-01/384519 - Vendor Advisory

13 Jan 2026, 21:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-01-13 21:15

Updated : 2026-01-22 19:57

NVD link : CVE-2026-0528

Mitre link : CVE-2026-0528

CVE.ORG link : CVE-2026-0528

JSON object : View

Products Affected

elastic

kibana

CWE

CWE-129

Improper Validation of Array Index

{"id": "CVE-2026-0528", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "security@elastic.co", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "ADJACENT_NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 2.8}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "published": "2026-01-13T21:15:50.647", "references": [{"url": "https://discuss.elastic.co/t/metricbeat-8-19-10-9-1-10-9-2-4-security-update-esa-2026-01/384519", "tags": ["Vendor Advisory"], "source": "security@elastic.co"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security@elastic.co", "description": [{"lang": "en", "value": "CWE-129"}]}], "descriptions": [{"lang": "en", "value": "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."}], "lastModified": "2026-01-22T19:57:29.927", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:elastic:kibana:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5DE7E670-76C6-4E95-BDD0-9322E42929BB", "versionEndExcluding": "7.17.29", "versionStartIncluding": "7.0.0"}, {"criteria": "cpe:2.3:a:elastic:kibana:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8707CF69-9922-490B-B64F-38F2D31E2CA1", "versionEndExcluding": "8.19.10", "versionStartIncluding": "8.0.0"}, {"criteria": "cpe:2.3:a:elastic:kibana:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "FC3281ED-A331-43DC-9705-80A3FA3E6C75", "versionEndExcluding": "9.1.10", "versionStartIncluding": "9.0.0"}, {"criteria": "cpe:2.3:a:elastic:kibana:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8BF9D6AE-B07F-4516-A684-60B02BF731A0", "versionEndExcluding": "9.2.4", "versionStartIncluding": "9.2.0"}], "operator": "OR"}]}], "sourceIdentifier": "security@elastic.co"}