CVE-2026-56864
highpriority · track · 0EPSS 0.003 · 22 %ileDEEUFRUSEPSS · scored 2026-10-27
A malicious GOSUMDB was capable of serving arbitrary module content not contained within the transparency log. This attack allows for a coordinating GOPROXY and GOSUMDB to serve a client malicious module content that cannot be detected by evaluating the transparency log. In order to determine if you have been affected: rm -r go.sum go.work.sum vendor/ && go mod tidy
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.9–7.5
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (25)
Products and version ranges known to be affected.
- Red Hat Enterprise Linux Advanced Cluster Management for Kubernetesall versionscert_bundDEcpe:/o:redhat:enterprise_linux:advanced_cluster_management_for_kubernetes
- Red Hat Enterprise Linux Migration Toolkit for Applicationsall versionscert_bundDEcpe:/o:redhat:enterprise_linux:migration_toolkit_for_applications_6.2.0
- Red Hat OpenShift Container Platformall versionscert_bundDEcpe:/a:redhat:openshift:container_platform
advisories (4)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2026-2850Golang Go: Mehrere SchwachstellenDeutsch2026-08-13csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Golang Go ausnutzen, um einen Denial of Service zu verursachen, ein Cross Site Scripting durchzuführen, Sicherheitsmaßnahmen zu umgehen oder Daten zu manipulieren.
- BIT-golang-2026-56864Ignore unrelated, unauthenticated hashes in Lookup in golang.org/x/mod/sumdb2026-08-19vendor · osvUS
A malicious GOSUMDB was capable of serving arbitrary module content not contained within the transparency log. This attack allows for a coordinating GOPROXY and GOSUMDB to serve a client malicious module content that cannot be detected by evaluating the transparency log. In order to determine if you have been affected: rm -r go.sum go.work.sum vendor/ && go mod tidy
- CERTFR-2026-AVI-1385Multiples vulnérabilités dans les produits VMwareFrançais2026-10-26vendor · certfrFR
- GO-2026-6180Ignore unrelated, unauthenticated hashes in Lookup in golang.org/x/mod/sumdb2026-08-13vendor · osvUS
A malicious GOSUMDB was capable of serving arbitrary module content not contained within the transparency log. This attack allows for a coordinating GOPROXY and GOSUMDB to serve a client malicious module content that cannot be detected by evaluating the transparency log. In order to determine if you have been affected: rm -r go.sum go.work.sum vendor/ && go mod tidy
also known as (4)
Other names and identifiers for this entity.
- CNNVD-2026-31611380cnnvd
- EUVD-2026-58514enisa_euvd
- BIT-golang-2026-56864osv
- GO-2026-6180osv
sources
Which sources assert this record, and when.
references (15)
External citations — patches, advisories, analysis.
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