GHSA-27qj-9gvp-8rh9
Packetbeat does not properly validate an array index in multiple protocol parser components
Quick fix
GHSA-27qj-9gvp-8rh9 — github.com/elastic/beats/v7: upgrade to the fixed version with the command below.
go get github.com/elastic/beats/v7@v7.0.0-alpha2.0.20260126223743-dec1b31111ecDetails
Improper Validation of Array Index (CWE-129) in multiple protocol parser components in Packetbeat can lead Denial of Service via Input Data Manipulation (CAPEC-153). An attacker with the ability to send specially crafted, malformed network packets to a monitored network interface can trigger out-of-bounds read operations, resulting in application crashes or resource exhaustion. This requires the attacker to be positioned on the same network segment as the Packetbeat deployment or to control traffic routed to monitored interfaces.
Are you affected?
Enter the version of the package you're using.
Affected packages
0Fixed in: 7.0.0-alpha2.0.20260126223743-dec1b31111ecgo get github.com/elastic/beats/v7@v7.0.0-alpha2.0.20260126223743-dec1b31111ecReferences
- https://nvd.nist.gov/vuln/detail/CVE-2026-26933[ADVISORY]
- https://github.com/elastic/beats/commit/941098459db6556b837194f40c076b08d51137cb[WEB]
- https://github.com/elastic/beats/commit/dec1b31111ec3500b82db21ba67dde5c914ee94d[WEB]
- https://discuss.elastic.co/t/packetbeat-8-19-11-9-2-5-security-update-esa-2026-11/385533[WEB]
- https://github.com/elastic/beats[PACKAGE]