> CVE-2026-56855

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PUBLISHED
2026-09-02 20:17
MODIFIED
2026-09-02 20:17
EPSS (Prob. Exploit)
0.50%
Top 58.0%
DATA SOURCES:
NVD 🔗 2026-09-02 FIRST EPSS 🔗 2026-10-25 OSV 🔗 2026-09-09 MSRC 🔗 2026-09-08

> DESCRIPTION

Previously, after a channel has been established, a malicious peer could send crafted messages that would deadlock the entire connection. Now, we handle all RFC 4254 channel messages; global requests are handled explicitly. Then, treat all other messages as a protocol error and tear the connection down instead of buffering and blocking.

> AFFECTED_PRODUCTS

ℹ️ Aucun produit affecté n'a encore été publié par NVD pour cette CVE.

> RED HAT SECURITY ADVISORIES

Red Hat Security Advisory: buildah security update
An update for buildah is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (...
Red Hat Security Advisory: cert-manager Operator for Red Hat OpenShift 1.17.2
cert-manager Operator for Red Hat OpenShift 1.17.2
Red Hat Security Advisory: cert-manager Operator for Red Hat OpenShift 1.17.2
cert-manager Operator for Red Hat OpenShift 1.17.2
Red Hat Security Advisory: RHOAI 3.4.5 - Red Hat OpenShift AI
Updated images are now available for Red Hat OpenShift AI.
Red Hat Security Advisory: buildah security update
An update for buildah is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (...

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

Prevent DoS on deadlocked established channel in golang.org/x/crypto/ssh

AFFECTED PACKAGES:
Unknown / Unknown
55 versions affected
ALIASES:
GO-2026-6355

> HISTORIQUE DES MODIFICATIONS

Première apparition
02/09/2026 20:17
Source: NVD
Total des modifications: 0 Dernière mise à jour: 1 month ago

> REFERENCES

https://go.dev/cl/826524
https://go.dev/issue/81317
https://groups.google.com/g/golang-announce/c/1y3fb2np35U
https://pkg.go.dev/vuln/GO-2026-6355
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