Metricbeat affected by multiple denial of service vulnerabilities

CVE-2026-0528 → View on GitHub ↗ View on CVE.org ↗ View on NVD ↗

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.

Basic information

Type
reviewed
Severity
medium
Advisory on GitHub
Open advisory ↗
Repository advisory
—
Source code
Browse source ↗
Published (advisory)
2026-01-13 21:31:46 UTC
Updated
2026-01-22 22:32:16 UTC
GitHub reviewed
2026-01-22 22:32:15 UTC
NVD published
2026-01-13

EPSS Score

Score Percentile
0.05% 16.56%

CVSS Scores

Base score Version Severity Vector
6.5 3.1 —
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:A)
Attacker has to be nearby on the network—same office, same link, that vibe—not the whole wide internet.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.

Identifiers

Type Value
GHSA GHSA-w2gr-585j-r428 ↗
CVE CVE-2026-0528 ↗

CWEs

CWE id Name
CWE-129 Improper Validation of Array Index

Affected packages (4)

Vulnerable version ranges and first patched releases as published by GitHub.

Ecosystem Package Vulnerable range First patched Vulnerable functions
go github.com/elastic/beats/v7 < 7.0.0-alpha2.0.20251217054608-6e42552a23ce 7.0.0-alpha2.0.20251217054608-6e42552a23ce —
go github.com/elastic/beats/v7 >= 8.0.0, < 8.19.10 8.19.10 —
go github.com/elastic/beats/v7 >= 9.0.0, < 9.1.10 9.1.10 —
go github.com/elastic/beats/v7 >= 9.2.0, < 9.2.4 9.2.4 —

References

cvelogic Threat Intelligence