Description
When using http.CrossOriginProtection, the AddInsecureBypassPattern method can unexpectedly bypass more requests than intended. CrossOriginProtection then skips validation, but forwards the original request path, which may be served by a different handler without the intended security protections.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Go standard library | net/http | 1.25.0 – < 1.25.1 | 1.25.1 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | golang-1.25 | 1.25.1-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.04 LTS | golang-1.23 +1 | No fix yet | — |
| Ubuntu 25.10 | golang-1.23 +2 | No fix yet | — |
| Ubuntu 24.04 LTS | golang-1.21 +4 | No fix yet | — |
| Ubuntu 22.04 LTS | golang-1.17 +7 | No fix yet | — |
| Ubuntu 20.04 LTS | golang-1.13 +5 | No fix yet | — |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | golang-1.8 +2 | No fix yet | — |
| Ubuntu 16.04 LTS | golang-1.6 +1 | No fix yet | — |
| Ubuntu 14.04 LTS | golang-1.10 | No fix yet | — |
| Ubuntu Pro 22.04 LTS | golang-1.13 | No fix yet | — |
| Ubuntu Pro 20.04 LTS | golang-1.16 | No fix yet | — |
| Ubuntu Pro 18.04 LTS | golang-1.13 +2 | No fix yet | — |
| Ubuntu Pro 16.04 LTS | golang-1.13 +1 | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Hardened Images 1 | golang1.25 +6 | 1.25.9-1.hum1 | RHSA-2026:7385 |
| Red Hat Hardened Images 1 | golang1.26 +6 | 1.26.2-1.hum1 | RHSA-2026:7291 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | aws-iam-authenticator | 0.7.18-150000.1.17.1 | SUSE-SU-2026:2643-1 |
| SLES 15 SP7 | go1.25 | 1.25.1-150000.1.8.1 | SUSE-SU-2025:03200-1 |
| SLES 15 SP7 | go1.25-openssl | 1.25.1-150600.13.6.1 | SUSE-SU-2026:0298-1, SUSE-SU-2025:03525-1 |
| SLES 15 SP6 | aws-iam-authenticator | 0.7.18-150000.1.17.1 | SUSE-SU-2026:2643-1 |
| SLES 15 SP6 | go1.25 | 1.25.1-150000.1.8.1 | SUSE-SU-2025:03200-1 |
| SLES 15 SP6 | go1.25-openssl | 1.25.1-150600.13.6.1 | SUSE-SU-2026:0298-1, SUSE-SU-2025:03525-1 |
| SLES 15 SP6 | govulncheck-vulndb | 0.0.20251023T162509-150000.1.110.1 | SUSE-SU-2025:3799-1 |
| SLES 15 SP5 | aws-iam-authenticator | 0.7.18-150000.1.17.1 | SUSE-SU-2026:2643-1 |
| SLES 15 SP5 | go1.25 | 1.25.1-150000.1.8.1 | SUSE-SU-2025:03200-1 |
| SLES 15 SP5 | go1.25-openssl | 1.25.1-150000.1.6.1 | SUSE-SU-2026:0297-1, SUSE-SU-2025:03524-1 |
| SLES 15 SP4 | aws-iam-authenticator | 0.7.18-150000.1.17.1 | SUSE-SU-2026:2643-1 |
| SLES 15 SP4 | go1.25 | 1.25.1-150000.1.8.1 | SUSE-SU-2025:03200-1 |
| SLES 15 SP4 | go1.25-openssl | 1.25.1-150000.1.6.1 | SUSE-SU-2026:0297-1, SUSE-SU-2025:03524-1 |
| SLES 15 SP3 | go1.25 | 1.25.1-150000.1.8.1 | SUSE-SU-2025:03200-1 |
| SLES 15 SP3 | go1.25-openssl | 1.25.1-150000.1.6.1 | SUSE-SU-2025:03524-1 |
Show 10 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 16.0 | go1.25 | 1.25.5-160000.1.1 | SUSE-SU-2025:21192-1 |
| SLES for SAP 15 SP6 | go1.25-openssl | 1.25.6-150600.13.9.1 | SUSE-SU-2026:0298-1 |
| SLES for SAP 15 SP5 | go1.25 | 1.25.1-150000.1.8.1 | SUSE-SU-2025:03200-1 |
| SLES for SAP 15 SP5 | go1.25-openssl | 1.25.1-150000.1.6.1 | SUSE-SU-2026:0297-1, SUSE-SU-2025:03524-1 |
| SLES for SAP 15 SP4 | go1.25 | 1.25.1-150000.1.8.1 | SUSE-SU-2025:03200-1 |
| SLES for SAP 15 SP4 | go1.25-openssl | 1.25.1-150000.1.6.1 | SUSE-SU-2026:0297-1, SUSE-SU-2025:03524-1 |
| SLES for SAP 15 SP3 | go1.25 | 1.25.1-150000.1.8.1 | SUSE-SU-2025:03200-1 |
| SLES for SAP 15 SP3 | go1.25-openssl | 1.25.1-150000.1.6.1 | SUSE-SU-2025:03524-1 |
| SLES 16.0 | go1.25 | 1.25.5-160000.1.1 | SUSE-SU-2025:21192-1 |
| SLE HPC 15 SP5 | go1.25 | 1.25.1-150000.1.8.1 | SUSE-SU-2025:03200-1 |
| SLE HPC 15 SP5 | go1.25-openssl | 1.25.1-150000.1.6.1 | SUSE-SU-2026:0297-1, SUSE-SU-2025:03524-1 |
| SLE HPC 15 SP4 | go1.25 | 1.25.1-150000.1.8.1 | SUSE-SU-2025:03200-1 |
| SLE HPC 15 SP4 | go1.25-openssl | 1.25.1-150000.1.6.1 | SUSE-SU-2026:0297-1, SUSE-SU-2025:03524-1 |
| SLE HPC 15 SP3 | go1.25 | 1.25.1-150000.1.8.1 | SUSE-SU-2025:03200-1 |
| SLE HPC 15 SP3 | go1.25-openssl | 1.25.1-150000.1.6.1 | SUSE-SU-2025:03524-1 |
| SUSE Enterprise Storage 7.1 | go1.25 | 1.25.1-150000.1.8.1 | SUSE-SU-2025:03200-1 |
| SUSE Enterprise Storage 7.1 | go1.25-openssl | 1.25.1-150000.1.6.1 | SUSE-SU-2025:03524-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | go1.25 | 1.25.1-1.1 | openSUSE-SU-2025:15525-1 |
| openSUSE Tumbleweed | govulncheck-vulndb | 0.0.20250922T204835-1.1 | openSUSE-SU-2025:15574-1 |
| openSUSE Leap 16.0 | go1.25 | 1.25.5-160000.1.1 | openSUSE-SU-2025:20157-1 |
| openSUSE Leap 16.0 | govulncheck-vulndb | 0.0.20260723T184607-160000.1.1 | openSUSE-SU-2026:21483-1 |
| openSUSE Leap 15.6 | go1.25 | 1.25.1-150000.1.8.1 | SUSE-SU-2025:03200-1 |
| openSUSE Leap 15.6 | go1.25-openssl | 1.25.1-150600.13.6.1 | SUSE-SU-2026:0298-1, SUSE-SU-2025:03525-1 |
| openSUSE Leap 15.6 | govulncheck-vulndb | 0.0.20251023T162509-150000.1.110.1 | SUSE-SU-2025:3799-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | go | 1.25.1-r0 | — |
| Alpine v3.23 | go | 1.25.1-r0 | — |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | aactl | 0.4.12-r36 | — |
| Wolfi rolling | amazon-cloudwatch-agent-operator +1 | 3.2.0-r0 | — |
| Wolfi rolling | argo-events | 1.9.7-r4 | — |
| Wolfi rolling | aws-application-networking-k8s +1 | 1.1.4-r2 | — |
| Wolfi rolling | aws-eks-pod-identity-agent +1 | 0.1.33-r1 | — |
| Wolfi rolling | aws-otel-collector +2 | 0.45.0-r1 | — |
| Wolfi rolling | aws-privateca-issuer +1 | 1.7.0-r1 | — |
| Wolfi rolling | azure-service-operator +1 | 2.15.0-r1 | — |
| Wolfi rolling | bom | 0.6.0-r25 | — |
| Wolfi rolling | buildctl +1 | 0.24.0-r1 | — |
| Wolfi rolling | caddy +2 | 2.10.2-r1 | — |
| Wolfi rolling | cerbos +3 | 0.46.0-r3 | — |
| Wolfi rolling | chart-testing | 3.13.0-r8 | — |
| Wolfi rolling | chartmuseum | 0.16.3-r7 | — |
| Wolfi rolling | cilium-cli | 0.18.7-r1 | — |
| Wolfi rolling | cis-operator-1.4 | 1.4.1-r5 | — |
| Wolfi rolling | clickhouse-operator +3 | 0.25.3-r2 | — |
| Wolfi rolling | cloud-provider-gcp-cloud-controller-manager +1 | 34.0.0-r0 | — |
| Wolfi rolling | cloud-provider-vsphere | 1.34.0-r1 | — |
| Wolfi rolling | cloud-sql-proxy-2.16 +1 | 2.16.0-r9 | — |
| Wolfi rolling | cluster-api-azure-controller +1 | 1.21.0-r1 | — |
| Wolfi rolling | cluster-api-helm-controller +1 | 0.3.2-r6 | — |
| Wolfi rolling | cluster-api-provider-vsphere +1 | 1.14.0-r1 | — |
| Wolfi rolling | conftest | 0.62.0-r6 | — |
| Wolfi rolling | controller-gen | 0.19.0-r1 | — |
| Wolfi rolling | ctr-1 +4 | 1.7.28-r3 | — |
| Wolfi rolling | ctr-2 +4 | 2.1.4-r3 | — |
| Wolfi rolling | delve | 1.25.2-r1 | — |
| Wolfi rolling | dex +1 | 2.44.0-r1 | — |
| Wolfi rolling | dgraph | 24.1.4-r1 | — |
| Wolfi rolling | dive | 0.13.1-r8 | — |
| Wolfi rolling | docker-cli +1 | 28.4.0-r1 | — |
| Wolfi rolling | docker-cli-buildx | 0.28.0-r1 | — |
| Wolfi rolling | docker-credential-gcr | 2.1.30-r4 | — |
| Wolfi rolling | docker-machine-driver-harvester | 1.0.3-r4 | — |
| Wolfi rolling | eksctl | 0.214.0-r1 | — |
| Wolfi rolling | emissary +6 | 3.10.0-r10 | — |
| Wolfi rolling | envconsul | 0.13.4-r1 | — |
| Wolfi rolling | falcoctl | 0.11.4-r0 | — |
| Wolfi rolling | flux | 2.6.4-r5 | — |
| Wolfi rolling | fulcio | 1.7.1-r7 | — |
| Wolfi rolling | fzf | 0.65.2-r1 | — |
| Wolfi rolling | gcsfuse | 2.12.2-r5 | — |
| Wolfi rolling | glow | 2.1.1-r6 | — |
| Wolfi rolling | gobump | 0.9.3-r1 | — |
| Wolfi rolling | gobuster | 3.8.2-r1 | — |
| Wolfi rolling | gptscript | 0.9.5-r16 | — |
| Wolfi rolling | grafana-alloy | 1.10.2-r4 | — |
| Wolfi rolling | grafana-rollout-operator | 0.29.0-r1 | — |
| Wolfi rolling | guac +4 | 1.0.1-r0 | — |
| Wolfi rolling | harbor-cli | 0.0.11-r1 | — |
| Wolfi rolling | harbor-registry | 3.0.0-r10 | — |
| Wolfi rolling | headlamp +1 | 0.35.0-r1 | — |
| Wolfi rolling | helm-operator +1 | 1.41.1-r4 | — |
| Wolfi rolling | helm-push | 0.10.4-r34 | — |
| Wolfi rolling | helm-set-status | 0.3.0-r4 | — |
| Wolfi rolling | hubble +1 | 1.18.0-r2 | — |
| Wolfi rolling | ini-file | 1.4.9-r1 | — |
| Wolfi rolling | ip-masq-agent | 2.12.0-r13 | — |
| Wolfi rolling | ipfs-cluster +2 | 1.1.4-r7 | — |
| Wolfi rolling | k3d +2 | 5.8.3-r17 | — |
| Wolfi rolling | k3s +2 | 1.34.1.1-r0 | — |
| Wolfi rolling | k3s-1.32 +2 | 1.32.8.1-r1 | — |
| Wolfi rolling | k8s_gateway +1 | 1.6.0-r1 | — |
| Wolfi rolling | k8sgpt | 0.4.25-r1 | — |
| Wolfi rolling | kapp | 0.64.2-r4 | — |
| Wolfi rolling | kapp-controller +1 | 0.58.1-r1 | — |
| Wolfi rolling | kind | 0.30.0-r1 | — |
| Wolfi rolling | ko | 0.18.0-r6 | — |
| Wolfi rolling | kor | 0.6.4-r2 | — |
| Wolfi rolling | kpt | 1.0.0_beta55-r12 | — |
| Wolfi rolling | kube-bench +1 | 0.12.0-r1 | — |
| Wolfi rolling | kube-logging-operator +4 | 6.0.3-r1 | — |
| Wolfi rolling | kubecolor | 0.5.1-r6 | — |
| Wolfi rolling | kubeflow-katib +17 | 0.18.0-r9 | — |
| Wolfi rolling | kuberlr | 0.6.1-r3 | — |
| Wolfi rolling | kubernetes-csi-driver-hostpath | 1.17.0-r5 | — |
| Wolfi rolling | kubernetes-csi-driver-nfs +1 | 4.11.0-r7 | — |
| Wolfi rolling | kubernetes-csi-external-health-monitor +1 | 0.16.0-r0 | — |
| Wolfi rolling | kubernetes-dashboard | 7.13.0-r6 | — |
| Wolfi rolling | kubernetes-dashboard-api +1 | 1.13.0-r6 | — |
| Wolfi rolling | kubernetes-dashboard-auth +1 | 1.3.0-r6 | — |
| Wolfi rolling | kubernetes-dashboard-web +1 | 1.7.0-r6 | — |
| Wolfi rolling | kyverno-notation-aws +1 | 1.1-r22 | — |
| Wolfi rolling | lazydocker | 0.24.1-r7 | — |
| Wolfi rolling | libnvidia-container | 1.17.8-r5 | — |
| Wolfi rolling | migrate +1 | 4.19.0-r1 | — |
| Wolfi rolling | mockgen | 0.6.0-r1 | — |
| Wolfi rolling | mongo-tools | 100.13.0-r2 | — |
| Wolfi rolling | nats-server-config-reloader +2 | 0.19.2-r1 | — |
| Wolfi rolling | neuvector-sigstore-interface | 0_git20250629-r3 | — |
| Wolfi rolling | nginx-prometheus-exporter +1 | 1.5.0-r1 | — |
| Wolfi rolling | nodetaint | 0.0.4-r37 | — |
| Wolfi rolling | nova +1 | 3.11.8-r2 | — |
| Wolfi rolling | nri-apache +1 | 1.15.2-r1 | — |
| Wolfi rolling | nri-consul +1 | 2.9.3-r1 | — |
| Wolfi rolling | nri-f5 +1 | 2.9.0-r1 | — |
| Wolfi rolling | nri-haproxy +1 | 3.2.2-r1 | — |
| Wolfi rolling | nri-memcached +1 | 2.7.2-r1 | — |
| Wolfi rolling | nri-mysql +1 | 1.17.0-r1 | — |
| Wolfi rolling | nri-nginx +1 | 3.6.2-r1 | — |
| Wolfi rolling | nri-rabbitmq +1 | 2.15.2-r1 | — |
| Wolfi rolling | nri-redis +1 | 1.12.3-r1 | — |
| Wolfi rolling | nuclei | 3.4.10-r2 | — |
| Wolfi rolling | oauth2-proxy +1 | 7.12.0-r1 | — |
| Wolfi rolling | opa +41 | 1.8.0-r1 | — |
| Wolfi rolling | opentofu-1.9 | 1.9.4-r1 | — |
| Wolfi rolling | pluto +1 | 5.22.5-r3 | — |
| Wolfi rolling | polaris | 10.1.1-r1 | — |
| Wolfi rolling | portieris +1 | 0.13.30-r2 | — |
| Wolfi rolling | prometheus-3.2 | 3.2.1-r49 | — |
| Wolfi rolling | prometheus-operator +3 | 0.85.0-r2 | — |
| Wolfi rolling | rabbitmq-cluster-operator +2 | 2.16.1-r1 | — |
| Wolfi rolling | rabbitmq-default-user-credential-updater +1 | 1.0.8-r1 | — |
| Wolfi rolling | rabbitmq-messaging-topology-operator +2 | 1.17.4-r1 | — |
| Wolfi rolling | rancher-system-agent | 0.3.13-r3 | — |
| Wolfi rolling | rancher-system-upgrade-controller | 0.16.3-r1 | — |
| Wolfi rolling | ratify +10 | 1.4.0-r5 | — |
| Wolfi rolling | rclone +1 | 1.71.1-r0 | — |
| Wolfi rolling | regclient +6 | 0.9.2-r1 | — |
| Wolfi rolling | render-template | 1.0.9-r1 | — |
| Wolfi rolling | spark-operator +1 | 2.3.0-r3 | — |
| Wolfi rolling | spire-controller-manager +1 | 0.6.3-r1 | — |
| Wolfi rolling | src | 6.7.1104-r1 | — |
| Wolfi rolling | steampipe | 2.2.0-r0 | — |
| Wolfi rolling | step-kms-plugin | 0.15.1-r1 | — |
| Wolfi rolling | swagger | 0.32.3-r6 | — |
| Wolfi rolling | tekton-chains | 0.25.1-r6 | — |
| Wolfi rolling | terraform +2 | 1.5.7-r33 | — |
| Wolfi rolling | terraform-mcp-server | 0.2.3-r2 | — |
| Wolfi rolling | terraform-provider-azapi | 2.6.1-r1 | — |
| Wolfi rolling | tflint +1 | 0.59.1-r1 | — |
| Wolfi rolling | thanos-operator +1 | 0.3.7-r34 | — |
| Wolfi rolling | timescaledb-tune | 0.18.1-r1 | — |
| Wolfi rolling | tkn | 0.42.0-r2 | — |
| Wolfi rolling | trivy | 0.66.0-r1 | — |
| Wolfi rolling | undock | 0.10.0-r5 | — |
| Wolfi rolling | wait-for-port | 1.0.10-r1 | — |
| Wolfi rolling | wal-g +1 | 3.0.7-r13 | — |
| Wolfi rolling | wgcf | 2.2.29-r1 | — |
| Wolfi rolling | wire-go | 0.7.0-r1 | — |
| Wolfi rolling | witness | 0.9.2-r6 | — |
| Wolfi rolling | yunikorn-k8shim +1 | 1.7.0-r4 | — |
| Wolfi rolling | zot | 2.1.8-r1 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Go | stdlib | >= 1.25.0, < 1.25.1 | 1.25.1 | GO-2025-3955 |
Advisories 15
- RHSA-2026:7291 Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update Red Hat Security Advisories (RHSA) · Nov 14, 2026
- RHSA-2026:7385 Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update Red Hat Security Advisories (RHSA) · Nov 14, 2026
- openSUSE-SU-2026:21483-1 Security update for govulncheck-vulndb SUSE / openSUSE Security Updates · Jul 31, 2026
- WID-SEC-2025-1963 Golang Go: Schwachstelle ermöglicht Umgehen von Sicherheitsvorkehrungen BSI CERT-Bund (WID) · Jun 28, 2026
- SUSE-SU-2026:2643-1 Security update for aws-iam-authenticator SUSE / openSUSE Security Updates · Jun 27, 2026
- openSUSE-SU-2025:20157-1 Security update for go1.25 SUSE / openSUSE Security Updates · Mar 23, 2026
- openSUSE-SU-2025:15574-1 govulncheck-vulndb-0.0.20250922T204835-1.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
- openSUSE-SU-2025:15525-1 go1.25-1.25.1-1.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:21192-1 Security update for go1.25 SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:03524-1 Security update for go1.25-openssl SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:03525-1 Security update for go1.25-openssl SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:03200-1 Security update for go1.25 SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:0298-1 Security update for go1.25-openssl SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:3799-1 Security update for govulncheck-vulndb SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2026:0297-1 Security update for go1.25-openssl SUSE / openSUSE Security Updates · Feb 4, 2026