CVE-2026-78667

Description

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 Platforms

Weakness Type

Unknown

References

• https://go.dev/cl/847309
• https://go.dev/issue/81858
• https://groups.google.com/g/golang-announce/c/U2fTuyDJznI
• https://pkg.go.dev/vuln/GO-2026-6609