CVE-2026-78669
published 2026-10-08CVE-2026-78669: A malicious HTTP/2 peer can cause excessive CPU consumption in the client or server by opening a large number of streams and then sending many small SETTINGS…
PriorityP341high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
0.61%
49.1th percentile
A malicious HTTP/2 peer can cause excessive CPU consumption in the client or server by opening a large number of streams and then sending many small SETTINGS frames containing SETTINGS_INITIAL_WINDOW_SIZE values.
Affected
28 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_internal_http2 | >= 1.27.0-0 < 1.27.2 | 1.27.2 |
| golang.org | x_net_golang.org_x_net_http2 | < 0.60.0 | 0.60.0 |
| grafana | grafana | — | — |
| helm | helm | — | — |
| inductiveautomation | ignition | — | — |
| jetbrains | toolbox | — | — |
| kata-containers | kata-containers | — | — |
| kubernetes | cri-o | — | — |
| podman_project | podman | — | — |
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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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: net/http/internal/http2: golang: golang.org/x/net/http2: net/http: Denial of Service via excessive HTTP/2 SETTINGS frames
vendor_redhat·2026-10-08·CVSS 7.5
CVE-2026-78669 [HIGH] CWE-770 net/http: net/http/internal/http2: golang: golang.org/x/net/http2: net/http: Denial of Service via excessive HTTP/2 SETTINGS frames
net/http: net/http/internal/http2: golang: golang.org/x/net/http2: net/http: Denial of Service via excessive HTTP/2 SETTINGS frames
A flaw was found in the Go net/http package. This flaw allows a remote attacker to cause a Denial of Service (DoS) by triggering excessive CPU consumption on an affected client or server. By opening a large number of HTTP/2 streams and repeatedly sending small configuration (SETTINGS) frames that modify window sizes, an attacker forces the system into intensive state processing. This resource exhaustion degrades performance and can render the service unresponsive.
Statement: A flaw was found in the Go net/http package and the golang.org/x/net/http2 module. A malicious HTTP/2 peer can cause excessive CPU consumption by opening a large number of HTTP/2 streams
VulDB
Go http HTTP 2 amplification (ID 847186 / EUVD-2026-95426)
vuldb·2026-10-09·CVSS 7.5
CVE-2026-78669 [HIGH] Go http HTTP 2 amplification (ID 847186 / EUVD-2026-95426)
A vulnerability categorized as problematic has been discovered in Go http. The affected element is an unknown function of the component HTTP 2. Executing a manipulation can lead to asymmetric resource consumption.
This vulnerability is handled as CVE-2026-78669. The attack can be executed remotely. There is not any exploit available.
Applying a patch is advised to resolve this issue.
No detection rules found.
No public exploits indexed.
2026-10-08
Published