Vulnerability/
REDHAT-BUG-2548334

REDHAT-BUG-2548334: High severity Google Go vulnerability

Published Oct 8, 2026

Updated

When parsing a Range header containing a large number of small ranges, FileServer(FS), ServeContent, and ServeFile(FS) can consume an excessive amount of CPU.

Affected Software

1 affected component

Google Go

Event History

Oct 8, 2026

Data Sourced

via Red Hat·11:01 PM

DescriptionSeverityAffected Software

Frequently Asked Questions

What kind of request is needed to trigger the excessive CPU use?

An attacker needs to send a Range header containing a large number of small ranges to code using FileServer, ServeContent, or ServeFile.

Which Go components are implicated?

The issue affects the FileServer, ServeContent, and ServeFile functionality in Google Go.

What is the likely operational impact?

Processing a crafted Range header can consume an excessive amount of CPU, which may reduce the availability or responsiveness of an affected service.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co

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