CVE-2026-78667
published 2026-10-08CVE-2026-78667: 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.
PriorityP338high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
0.48%
41.1th percentile
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
27 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| apache | thrift | — | — |
| buildah_project | buildah | — | — |
| confidential-containers | trustee | — | — |
| container-tools_rhel8 | buildah | — | — |
| container-tools_rhel8 | conmon | — | — |
| container-tools_rhel8 | containernetworking-plugins | — | — |
| container-tools_rhel8 | crun | — | — |
| container-tools_rhel8 | oci-seccomp-bpf-hook | — | — |
| container-tools_rhel8 | podman | — | — |
| container-tools_rhel8 | runc | — | — |
| container-tools_rhel8 | skopeo | — | — |
| container-tools_rhel8 | toolbox | — | — |
| etcd | etcd | — | — |
| git-lfs | git-lfs | — | — |
| go-toolset_rhel8 | golang | — | — |
| go_standard_library | net_http | < 1.26.9 | 1.26.9 |
| go_standard_library | net_http | >= 1.27.0-0 < 1.27.2 | 1.27.2 |
| grafana | grafana | — | — |
| helm | helm | — | — |
| inductiveautomation | ignition | — | — |
| jetbrains | toolbox | — | — |
| kata-containers | kata-containers | — | — |
| kubernetes | cri-o | — | — |
| podman_project | podman | — | — |
| redhat | openshift | — | — |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
vendor_redhat7.5HIGH
vendor_ubuntu7.5HIGH
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GHSA
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.
ghsa_unreviewed·2026-10-09
CVE-2026-78667 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.
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.
VulDB
Go net-http up to 1.26.8/1.27.1 FileServer/ServeContent/ServeFile allocation of resources (EUVD-2026-95424)
vuldb·2026-10-09·CVSS 7.5
CVE-2026-78667 [HIGH] Go net-http up to 1.26.8/1.27.1 FileServer/ServeContent/ServeFile allocation of resources (EUVD-2026-95424)
A vulnerability classified as problematic was found in Go net-http up to 1.26.8/1.27.1. Affected by this issue is the function FileServer/ServeContent/ServeFile. Executing a manipulation can lead to allocation of resources.
This vulnerability is tracked as CVE-2026-78667. The attack can be launched remotely. No exploit exists.
Upgrading the affected component is advised.
Ubuntu
Go vulnerabilities
vendor_ubuntu·2026-10-19·CVSS 7.5
CVE-2026-56866 [HIGH] Go vulnerabilities
Title: Go vulnerabilities
Summary: Several security issues were fixed in Go.
It was discovered that Go did not enforce a maximum recursion depth when
parsing deeply nested ASN.1 structures. An attacker could possibly use this
issue to cause Go to crash, resulting in a denial of service.
(CVE-2026-33818)
It was discovered that Go incorrectly reset the depth counter when decoding
XML elements. An attacker could possibly use this issue to cause Go to
crash via deeply nested XML input, resulting in a denial of service.
(CVE-2026-56859)
It was discovered that Go incorrectly handled TLS KeyUpdate messages after
the handshake was completed. A remote attacker could possibly use this
issue to cause Go to use excessive resources, leading to a denial of
service. (CVE-2026-56862)
It was discovere
Red Hat
net/http: golang: golang: Denial of Service via crafted HTTP Range headers
vendor_redhat·2026-10-08·CVSS 7.5
CVE-2026-78667 [HIGH] CWE-770 net/http: golang: golang: Denial of Service via crafted HTTP Range headers
net/http: golang: golang: Denial of Service via crafted HTTP Range headers
A flaw was found in the Go net/http package. A remote attacker can cause a Denial of Service (DoS) by sending an HTTP request containing a Range header with a large number of small byte ranges. When the server processes these ranges while serving content, it consumes an excessive amount of CPU resources, rendering the application unresponsive to legitimate users.
Package: helm (OpenShift Developer Tools and Services) - Affected
Package: openshift-pipelines-client (OpenShift Pipelines) - Affected
Package: kn-workflow-plugin (OpenShift Serverless) - Affected
Package: openshift-serverless-clients (OpenShift Serverless) - Affected
Package: istio-proxy (OpenShift Service Mesh 3) - Affected
Package: openshift-golan
No detection rules found.
No public exploits indexed.
2026-10-08
Published