CVE-2026-0528: Github.com/elastic/beats/v7 Denial of Service Vulnerability
MODERATECVE-2026-0528 is a MODERATE (CVSS 6.5) denial of service vulnerability (CWE-129: Improper Validation of Array Index) affecting Github.com/elastic/beats/v7 libraries in the Go ecosystem. The issue involves metricbeat affected by multiple denial of service vulnerabilities. Remediation is available by upgrading affected packages to version 7.0.0-alpha2.0.20251217054608-6e42552a23ce, 8.19.10, 9.1.10, 9.2.4.
CVE-2026-0528 at a Glance
Security Impact
CVSS: 6.5
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
How to Fix CVE-2026-0528
To remediate this vulnerability, upgrade all affected Github.com/elastic/beats/v7 dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
Upgrade github.com/elastic/beats/v7 to 7.0.0-alpha2.0.20251217054608-6e42552a23ceUpgrade github.com/elastic/beats/v7 to 8.19.10Upgrade github.com/elastic/beats/v7 to 9.1.10Upgrade github.com/elastic/beats/v7 to 9.2.4Run the following command in your project directory to verify that all resolved dependencies use the patched release:
inspect dependencies for github.com/elastic/beats/v7How to Check if You Are Affected
To determine whether your application is affected by CVE-2026-0528, inspect your project dependencies for Github.com/elastic/beats/v7:
inspect dependencies for github.com/elastic/beats/v7Analyze the terminal output to locate any version of Github.com/elastic/beats/v7 in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 7.0.0-alpha2.0.20251217054608-6e42552a23ce), your application is affected.
Note: Verify declared build manifests and deployed runtime container environments.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-129: Improper Validation of Array Index, where the product uses untrusted input when calculating or using an array index, but the product does not validate or incorrectly validates the index to ensure the index references a valid position within the array. In Github.com/elastic/beats/v7, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2026-0528 Affected Github.com/elastic/beats/v7 Versions
4 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
github.com/elastic/beats/v7
|
Go |
< 7.0.0-alpha2.0.20251217054608-6e42552a23ce
|
7.0.0-alpha2.0.20251217054608-6e42552a23ce
|
|
github.com/elastic/beats/v7
|
Go |
≥ 8.0.0
< 8.19.10
|
8.19.10
|
|
github.com/elastic/beats/v7
|
Go |
≥ 9.0.0
< 9.1.10
|
9.1.10
|
|
github.com/elastic/beats/v7
|
Go |
≥ 9.2.0
< 9.2.4
|
9.2.4
|
References
Frequently Asked Questions
What is CVE-2026-0528?
Which Github.com/elastic/beats/v7 versions are affected?
What version fixes CVE-2026-0528?
Is github.com/elastic/beats/v7 affected?
What is the CVSS score of CVE-2026-0528?
What CWE is associated with CVE-2026-0528?
How can I check Go dependencies for CVE-2026-0528?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-w2gr-585j-r428",
"modified" : "2026-01-22T22:32:15Z",
"published" : "2026-01-13T21:31:46Z",
"aliases" : [ "CVE-2026-0528" ],
"summary" : "Metricbeat affected by multiple denial of service vulnerabilities",
"details" : "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.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/elastic/beats/v7"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "7.0.0-alpha2.0.20251217054608-6e42552a23ce"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/elastic/beats/v7"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "8.0.0"
}, {
"fixed" : "8.19.10"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/elastic/beats/v7"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "9.0.0"
}, {
"fixed" : "9.1.10"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/elastic/beats/v7"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "9.2.0"
}, {
"fixed" : "9.2.4"
} ]
} ]
} ],
"references" : [ {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-0528"
}, {
"type" : "WEB",
"url" : "https://github.com/elastic/beats/commit/0025fbfe668936eb8fa65b838508faf3c3c04387"
}, {
"type" : "WEB",
"url" : "https://github.com/elastic/beats/commit/6e42552a23cec734e7977ebd3eb7fb797ddce456"
}, {
"type" : "WEB",
"url" : "https://github.com/elastic/beats/commit/c7664c91a5a68c2df782bfeffe4fb7f42ff2ad1a"
}, {
"type" : "WEB",
"url" : "https://discuss.elastic.co/t/metricbeat-8-19-10-9-1-10-9-2-4-security-update-esa-2026-01/384519"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/elastic/beats"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-129" ],
"severity" : "MODERATE",
"github_reviewed" : true,
"github_reviewed_at" : "2026-01-22T22:32:15Z",
"nvd_published_at" : "2026-01-13T21:15:50Z"
}
}