CVE-2026-78667

Published: Oct 8, 2026Modified: Oct 9, 2026

7.5

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitability: 3.9 / Impact: 3.6

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

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.

Related CWEs

CWE-770

Allocation of Resources Without Limits or Throttling

The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor.

References (4)

https://go.dev/cl/847309

Source: security@golang.org

https://go.dev/issue/81858

Source: security@golang.org

https://groups.google.com/g/golang-announce/c/U2fTuyDJznI

Source: security@golang.org

https://pkg.go.dev/vuln/GO-2026-6609

Source: security@golang.org

Timeline

No history available yet.