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Fencer Vulns
medium 5.3

CVE-2025-47912 json

Insufficient validation of bracketed IPv6 hostnames in net/url

published 2025-10-29 12 mo ago modified 2026-10-08 32 d ago also BIT-golang-2025-47912 , EUVD-2025-36735 , GO-2025-4010

cvss
5.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 40%
public exploits
0
none known

Summary

The Parse function permits values other than IPv6 addresses to be included in square brackets within the host component of a URL. RFC 3986 permits IPv6 addresses to be included within the host component, enclosed within square brackets. For example: "http://[::1]/". IPv4 addresses and hostnames must not appear within square brackets. Parse did not enforce this requirement.

Patch / fix

  • bitnami golang 1.24.8, 1.25.2
  • go stdlib 1.24.8, 1.25.2
  • Go standard library net/url 1.24.8, 1.25.2
  • golang1.25 hummingbird 1 1.25.9-1.hum1
  • golang1.25-bin hummingbird 1 1.25.9-1.hum1
  • golang1.25-src hummingbird 1 1.25.9-1.hum1
  • golang1.25-misc hummingbird 1 1.25.9-1.hum1
  • golang1.25-tests hummingbird 1 1.25.9-1.hum1
  • golang1.25-shared hummingbird 1 1.25.9-1.hum1
  • golang1.26 hummingbird 1 1.26.2-1.hum1
  • golang1.26-bin hummingbird 1 1.26.2-1.hum1

red hat advisories RHSA-2026:7385RHSA-2026:7291

  • go1.24-openssl SLES for SAP applications 16.0, SLES 16.0 1.24.13-160000.1.1
  • go1.25-openssl SLES for SAP applications 16.0, SLES 16.0 1.25.7-160000.1.1
  • go1.24-openssl SLES for SAP 15 SP6, SLES 15 SP6-LTSS, SLE Module for Development Tools 15 SP7 +1 more 1.24.12-150600.13.15.1
  • go1.25-openssl SLES for SAP 15 SP6, SLES 15 SP6-LTSS, SLE Module for Development Tools 15 SP7 +1 more 1.25.6-150600.13.9.1
  • go1.25-openssl SLES for SAP 15 SP5, SLES for SAP 15 SP4, SLES 15 SP5-LTSS +5 more 1.25.6-150000.1.9.1
  • go1.24-openssl SLES for SAP 15 SP5, SLES for SAP 15 SP4, SLES 15 SP5-LTSS +5 more 1.24.12-150000.1.18.1
  • go1.24 SLES for SAP applications 16.0, SLES 16.0 1.24.11-160000.1.1
  • go1.25 SLES for SAP applications 16.0, SLES 16.0 1.25.5-160000.1.1

suse advisories SUSE-SU-2026:20629-1SUSE-SU-2026:20623-1SUSE-SU-2026:0308-1SUSE-SU-2026:0298-1SUSE-SU-2026:0297-1SUSE-SU-2026:0296-1

  • govulncheck-vulndb openSUSE Leap 16.0 0.0.20260723T184607-160000.1.1
  • go1.24-openssl openSUSE Leap 16.0 1.24.13-160000.1.1
  • go1.25-openssl openSUSE Leap 16.0 1.25.7-160000.1.1
  • go1.24 openSUSE Leap 16.0 1.24.11-160000.1.1
  • go1.25 openSUSE Leap 16.0 1.25.5-160000.1.1
  • regclient openSUSE Tumbleweed 0.10.0-1.1
  • kubecolor openSUSE Tumbleweed 0.5.3-1.1
  • govulncheck-vulndb openSUSE Tumbleweed 0.0.20251029T215107-1.1

opensuse advisories openSUSE-SU-2026:21483-1openSUSE-SU-2026:20308-1openSUSE-SU-2026:20301-1openSUSE-SU-2025:20158-1openSUSE-SU-2025:20157-1openSUSE-SU-2025:15723-1

  • go Alpine 3.22 1.24.8-r0
  • go Alpine 3.24, Alpine 3.23 1.25.2-r0

alpine advisories ALPINE-CVE-2025-47912

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-47912 updated cvss 5.3

net/url: Insufficient validation of bracketed IPv6 hostnames in net/url

  • Red Hat Assisted Installer for Red Hat OpenShift Container Platform 2 rhai/assisted-installer-rhel9, rhai/assisted-installer-agent-rhel9, rhai/assisted-installer-controller-rhel9 Red Hat Builds for Red Hat OpenShift openshift-builds/openshift-builds-waiters-rhel9, openshift-builds/openshift-builds-webhook-rhel9, openshift-builds/openshift-builds-rhel9-operator, openshift-builds/openshift-builds-operator-bundle, openshift-builds/openshift-builds-controller-rhel9, openshift-builds/openshift-builds-git-cloner-rhel9, +4 more Red Hat cert-manager Operator for Red Hat OpenShift cert-manager/jetstack-cert-manager-rhel9, cert-manager/cert-manager-istio-csr-rhel9, cert-manager/jetstack-cert-manager-acmesolver-rhel9 Red Hat Confidential Compute Attestation confidential-compute-attestation-tech-preview/trustee-rhel9-operator Red Hat Cryostat 4 cryostat/cryostat-storage-rhel9 Red Hat Custom Metric Autoscaler operator for Red Hat Openshift custom-metrics-autoscaler/custom-metrics-autoscaler-rhel9, custom-metrics-autoscaler/custom-metrics-autoscaler-adapter-rhel9, custom-metrics-autoscaler/custom-metrics-autoscaler-rhel9-operator, custom-metrics-autoscaler/custom-metrics-autoscaler-admission-webhooks-rhel9
    +34 more products
    Red Hat Deployment Validation Operator dvo/deployment-validation-rhel8-operator Red Hat external secrets operator for Red Hat OpenShift - Tech Preview external-secrets-operator/external-secrets-rhel9 Red Hat Fence Agents Remediation Operator workload-availability/fence-agents-remediation-rhel8-operator Red Hat File Integrity Operator compliance/openshift-compliance-operator-bundle, compliance/openshift-file-integrity-rhel8-operator, compliance/openshift-file-integrity-operator-bundle Red Hat Gatekeeper 3 gatekeeper/gatekeeper-rhel9, gatekeeper/gatekeeper-rhel9-operator Red Hat Kube Descheduler Operator kube-descheduler-operator/descheduler-rhel9 Red Hat Logging Subsystem for Red Hat OpenShift openshift-logging/eventrouter-rhel9, openshift-logging/logging-loki-rhel9, openshift-logging/loki-rhel9-operator, openshift-logging/opa-openshift-rhel9, openshift-logging/lokistack-gateway-rhel9, openshift-logging/elasticsearch-proxy-rhel9, +4 more Red Hat Logical Volume Manager Storage lvms4/topolvm-rhel8, lvms4/topolvm-rhel9, lvms4/lvms-rhel9-operator, lvms4/lvms-operator-bundle Red Hat Machine Deletion Remediation Operator workload-availability/machine-deletion-remediation-rhel8-operator Red Hat Migration Toolkit for Applications 7 mta/mta-cli-rhel9 Red Hat Migration Toolkit for Applications 8 mta/mta-cli-rhel9 Red Hat Migration Toolkit for Containers rhmtc/openshift-migration-registry-rhel8 Red Hat Migration Toolkit for Virtualization migration-toolkit-virtualization/mtv-api-rhel9 Red Hat mirror registry for Red Hat OpenShift openshift/mirror-registry-rhel8 Red Hat mirror registry for Red Hat OpenShift 2 openshift/mirror-registry-rhel8 Red Hat Multiarch Tuning Operator multiarch-tuning/multiarch-tuning-rhel9-operator Red Hat Multicluster Engine for Kubernetes multicluster-engine/discovery-rhel9, multicluster-engine/assisted-installer-rhel9, multicluster-engine/assisted-service-8-rhel8, multicluster-engine/assisted-service-9-rhel9, multicluster-engine/backplane-rhel9-operator, multicluster-engine/image-based-install-rhel9, +12 more Red Hat Multicluster Global Hub multicluster-globalhub/multicluster-globalhub-agent-rhel9, multicluster-globalhub/multicluster-globalhub-grafana-rhel9, multicluster-globalhub/multicluster-globalhub-manager-rhel9, multicluster-globalhub/multicluster-globalhub-rhel9-operator, multicluster-globalhub/multicluster-globalhub-postgres-exporter-rhel9 Red Hat Network Observability Operator network-observability/network-observability-cli-rhel9, network-observability/network-observability-rhel9-operator, network-observability/network-observability-ebpf-agent-rhel9, network-observability/network-observability-flowlogs-pipeline-rhel9 Red Hat Node HealthCheck Operator workload-availability/node-healthcheck-rhel8-operator Red Hat Node Maintenance Operator workload-availability/node-maintenance-rhel8-operator, container-native-virtualization/node-maintenance-operator Red Hat OpenShift API for Data Protection oadp/oadp-velero-rhel8, oadp/oadp-velero-rhel9 Red Hat OpenShift Lightspeed openshift-lightspeed/lightspeed-rhel9-operator, openshift-lightspeed/lightspeed-operator-bundle, openshift-lightspeed/openshift-mcp-server-rhel9, openshift-lightspeed-tech-preview/lightspeed-operator-bundle Red Hat OpenShift Pipelines openshift-pipelines-client Red Hat OpenShift Run Once Duration Override Operator run-once-duration-override-operator/run-once-duration-override-rhel9 Red Hat OpenShift Secondary Scheduler Operator openshift-secondary-scheduler-operator/secondary-scheduler-rhel9-operator Red Hat OpenShift Serverless kn-workflow-plugin, openshift-serverless-1/kn-plugin-event-sender-rhel8, openshift-serverless-1/kn-plugin-func-func-util-rhel8 Red Hat OpenShift Service Mesh 3 openshift-service-mesh/kiali-rhel9, openshift-service-mesh/istio-cni-rhel9, openshift-service-mesh/istio-pilot-rhel9, openshift-service-mesh/istio-proxyv2-rhel9, openshift-service-mesh/istio-rhel9-operator Red Hat OpenShift Source-to-Image (S2I) source-to-image/source-to-image-rhel8 Red Hat Power monitoring for Red Hat OpenShift openshift-power-monitoring/kepler-rhel9, openshift-power-monitoring/power-monitoring-rhel9-operator Red Hat 3scale API Management Platform 2 rhcl-1/authorino-rhel9, 3scale-tech-preview/authorino-rhel9 Red Hat Advanced Cluster Management for Kubernetes 2 flightctl, flightctl-agent, flightctl-selinux, rhacm2/subctl-rhel9, rhacm2/thanos-rhel9, rhacm2/acm-cli-rhel9, +45 more Red Hat Advanced Cluster Security 4 advanced-cluster-security/rhacs-main-rhel8, advanced-cluster-security/rhacs-roxctl-rhel8, advanced-cluster-security/rhacs-scanner-rhel8, advanced-cluster-security/rhacs-rhel8-operator, advanced-cluster-security/rhacs-scanner-v4-rhel8, advanced-cluster-security/rhacs-scanner-slim-rhel8 Red Hat Ansible Automation Platform 2 receptor, ansible-automation-platform-26/receptor-rhel9, ansible-automation-platform/platform-operator-bundle
    affected: no fix available “Fix deferred”

38 more affected, 1 more fixed in the full advisory

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
12 mo ago

Exploit prediction

0.47% chance of exploitation in the next 30 days, higher than 40% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CNA 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
OSV 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Affected packages

ecosystem package affected fixed in
bitnami golang
<1.24.8
>=1.25.0, <1.25.2
1.24.8
1.25.2
go stdlib
<1.24.8
>=1.25.0, <1.25.2
1.24.8
1.25.2

Affected products

  • Go standard library net/url

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.