Vulnerability Report

CVE-2026-0528

Title: DoS in Metricbeat

DoS

Proof Of Concept

No public PoC currently indexed for CVE-2026-0528.

CWE Category CWE-129

Published Date Jan 13, 2026

Modified Date Jan 22, 2026

Exploit Status Not Found

Score 6.5 CVSS v3.1

Exploit Probability (EPSS)

0.33%

Vulnerability Summary

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.

Impacted Vendors

elastic 1

elasticsearch 1

Reference Links

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

CVSS v3.1

Source Entity [email protected]

Severity MEDIUM

6.5

Attack Vector

ADJACENT_NETWORK

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

RAW VECTOR CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v3.1

Source Entity [email protected]

Severity HIGH

7.5

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2026-0528 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

January 22, 2026 MODIFIED

Vulnerability data updated via NVD.

January 22, 2026 MODIFIED

Vulnerability data updated via NVD.

January 14, 2026 MODIFIED

Vulnerability data updated via NVD.

January 13, 2026 MODIFIED

Vulnerability data updated via NVD.

Attack Vector Matrix

Access Vector ADJACENT_NETWORK

Complexity LOW

Privileges N/A

Interaction NONE

CVSS Vector String


                                    CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Stack

No specific products linked.