Description
grpc-gateway v2.28.0 is vulnerable to Incorrect Access Control. The application processes the X-HTTP-Method-Override header in ServeMux.ServeHTTP without restricting allowed methods. When a POST request with Content-Type application/x-www-form-urlencoded includes this header, the request method is rewritten to an arbitrary attacker-supplied value before routing. This allows bypassing method-based access controls enforced by upstream proxies or WAFs.
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-github-grpc-ecosystem-grpc-gateway | 2.30.0-1 | — |
| Debian 13 | golang-github-grpc-ecosystem-grpc-gateway | No fix yet | — |
| Debian 12 | golang-github-grpc-ecosystem-grpc-gateway | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | golang-github-grpc-ecosystem-grpc-gateway | No fix yet | — |
| Ubuntu 26.04 LTS | golang-github-grpc-ecosystem-grpc-gateway | No fix yet | — |
| Ubuntu 24.04 LTS | golang-github-grpc-ecosystem-grpc-gateway | No fix yet | — |
| Ubuntu 22.04 LTS | golang-github-grpc-ecosystem-grpc-gateway | No fix yet | — |
| Ubuntu 20.04 LTS | golang-github-grpc-ecosystem-grpc-gateway | No fix yet | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | golang-github-grpc-ecosystem-grpc-gateway | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | alloy | 1.19.2-150700.15.29.1 | SUSE-SU-2026:4408-1 |
| SLES 15 SP7 | amazon-cloudwatch-agent | 1.300069.0-150400.9.10.1 | SUSE-SU-2026:4045-1 |
| SLES 15 SP7 | distribution | 3.1.2-150400.9.47.1 | SUSE-SU-2026:5202-1 |
| SLES 15 SP7 | helm | 3.21.3-150000.1.96.1 | SUSE-SU-2026:4175-1 |
| SLES 15 SP6 | amazon-cloudwatch-agent | 1.300069.0-150400.9.10.1 | SUSE-SU-2026:4045-1 |
| SLES 15 SP6 | distribution | 3.1.2-150400.9.47.1 | SUSE-SU-2026:5202-1 |
| SLES 15 SP6 | helm | 3.21.3-150000.1.96.1 | SUSE-SU-2026:4175-1 |
| SLES 15 SP5 | amazon-cloudwatch-agent | 1.300069.0-150400.9.10.1 | SUSE-SU-2026:4045-1 |
| SLES 15 SP5 | distribution | 3.1.2-150400.9.47.1 | SUSE-SU-2026:5202-1 |
| SLES 15 SP5 | helm | 3.21.3-150000.1.96.1 | SUSE-SU-2026:4175-1 |
| SLES 15 SP4 | amazon-cloudwatch-agent | 1.300069.0-150400.9.10.1 | SUSE-SU-2026:4045-1 |
| SLES 15 SP4 | distribution | 3.1.2-150400.9.47.1 | SUSE-SU-2026:5202-1 |
| SLES 15 SP4 | helm | 3.21.3-150000.1.96.1 | SUSE-SU-2026:4175-1 |
Show 11 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 16.0 | alloy | 1.19.2-160000.1.1 | SUSE-SU-2026:24148-1 |
| SLES for SAP 16.0 | distribution | 3.1.1-160000.3.1 | SUSE-SU-2026:23864-1, SUSE-SU-2026:23852-1 |
| SLES for SAP 16.0 | helm | 3.21.3-160000.2.1 | SUSE-SU-2026:23688-1 |
| SLES for SAP 15 SP6 | distribution | 3.1.2-150400.9.47.1 | SUSE-SU-2026:5202-1 |
| SLES for SAP 15 SP6 | helm | 3.21.3-150000.1.96.1 | SUSE-SU-2026:4175-1 |
| SLES for SAP 15 SP5 | distribution | 3.1.2-150400.9.47.1 | SUSE-SU-2026:5202-1 |
| SLES for SAP 15 SP5 | helm | 3.21.3-150000.1.96.1 | SUSE-SU-2026:4175-1 |
| SLES for SAP 15 SP4 | distribution | 3.1.2-150400.9.47.1 | SUSE-SU-2026:5202-1 |
| SLES for SAP 15 SP4 | helm | 3.21.3-150000.1.96.1 | SUSE-SU-2026:4175-1 |
| SLES 16.0 | alloy | 1.19.2-160000.1.1 | SUSE-SU-2026:24148-1 |
| SLES 16.0 | distribution | 3.1.1-160000.3.1 | SUSE-SU-2026:23864-1, SUSE-SU-2026:23852-1 |
| SLES 16.0 | helm | 3.21.3-160000.2.1 | SUSE-SU-2026:23688-1 |
| SLE Micro 6.2 | c-ares | 1.34.8-160000.1.1 | SUSE-SU-2026:23456-1 |
| SLE Micro 6.2 | elemental | 2.3.2-160000.1.1 | SUSE-SU-2026:24645-1 |
| SLE Micro 6.2 | elemental-register | 1.9.3-160000.1.1 | SUSE-SU-2026:24645-1 |
| SLE Micro 6.2 | elemental-system-agent | 0.15.2-160000.1.1 | SUSE-SU-2026:24645-1 |
| SLE Micro 6.2 | elemental-toolkit | 2.3.5-160000.1.1 | SUSE-SU-2026:24645-1 |
| SLE Micro 6.2 | helm | 3.21.3-160000.2.1 | SUSE-SU-2026:23506-1 |
| SLE Micro 6.1 | helm | 3.21.3-slfo.1.1_2.1 | SUSE-SU-2026:23522-1 |
| SLE Micro 6.0 | helm | 3.21.3-2.1 | SUSE-SU-2026:23456-1 |
| SLE Micro 5.5 | helm | 3.21.3-150000.1.96.1 | SUSE-SU-2026:4175-1 |
| SLE HPC 15 SP5 | distribution | 3.1.2-150400.9.47.1 | SUSE-SU-2026:5202-1 |
| SLE HPC 15 SP5 | helm | 3.21.3-150000.1.96.1 | SUSE-SU-2026:4175-1 |
| SLE HPC 15 SP4 | distribution | 3.1.2-150400.9.47.1 | SUSE-SU-2026:5202-1 |
| SLE HPC 15 SP4 | helm | 3.21.3-150000.1.96.1 | SUSE-SU-2026:4175-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | alloy | 1.19.2-1.1 | openSUSE-SU-2026:11803-1 |
| openSUSE Tumbleweed | amazon-cloudwatch-agent | 1.300072.0-1.1 | openSUSE-SU-2026:11828-1 |
| openSUSE Tumbleweed | distribution | 3.1.1-6.1 | openSUSE-SU-2026:11697-1 |
| openSUSE Tumbleweed | hauler | 2.1.0-1.1 | openSUSE-SU-2026:11667-1 |
| openSUSE Tumbleweed | helm | 4.2.4-3.1 | openSUSE-SU-2026:11718-1 |
| openSUSE Tumbleweed | helm3 | 3.21.3-7.1 | openSUSE-SU-2026:11669-1 |
| openSUSE Tumbleweed | trivy | 0.74.0-2.1 | openSUSE-SU-2026:11676-1 |
| openSUSE Leap 16.0 | alloy | 1.19.2-160000.1.1 | openSUSE-SU-2026:22032-1 |
| openSUSE Leap 16.0 | distribution | 3.1.1-160000.3.1 | openSUSE-SU-2026:21898-1 |
| openSUSE Leap 16.0 | hauler | 2.1.0-bp160.1.1 | openSUSE-SU-2026:21793-1 |
| openSUSE Leap 16.0 | helm | 3.21.3-160000.2.1 | openSUSE-SU-2026:21809-1 |
| openSUSE Leap 16.0 | trivy | 0.74.0-160000.2.1 | openSUSE-SU-2026:21801-1 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | cert-manager | 1.12.15-14 | — |
| Azure Linux 3 | cf-cli | 8.7.11-9 | — |
| Azure Linux 3 | cloud-provider-kubevirt | 0.5.1-9 | — |
| Azure Linux 3 | containerd2 | 2.3.4-1 | — |
| Azure Linux 3 | cri-tools | 1.32.0-8 | — |
| Azure Linux 3 | docker-buildx | 0.14.0-17 | — |
| Azure Linux 3 | docker-compose | 2.27.0-14 | — |
| Azure Linux 3 | etcd | 3.5.35-1 | — |
| Azure Linux 3 | flannel | 0.24.2-32 | — |
| Azure Linux 3 | keda | 2.14.1-19 | — |
| Azure Linux 3 | kube-vip-cloud-provider | 0.0.10-10 | — |
| Azure Linux 3 | kubernetes | 1.30.10-30 | — |
| Azure Linux 3 | moby-containerd-cc | 1.7.7-17 | — |
| Azure Linux 3 | moby-engine | 25.0.18-1 | — |
| Azure Linux 3 | opa +2 | No fix yet | — |
| Azure Linux 3 | prometheus-adapter | 0.12.0-10 | — |
| Azure Linux 3 | telegraf | 1.31.0-33 | — |
Advisories 24
- SUSE-SU-2026:24645-1 Security update for elemental, elemental-register, elemental-system-agent, elemental-toolkit SUSE / openSUSE Security Updates · Nov 12, 2026
- SUSE-SU-2026:5202-1 Security update for distribution SUSE / openSUSE Security Updates · Nov 12, 2026
- SUSE-SU-2026:24148-1 Security update for alloy SUSE / openSUSE Security Updates · Oct 16, 2026
- openSUSE-SU-2026:22032-1 Security update for alloy SUSE / openSUSE Security Updates · Oct 9, 2026
- SUSE-SU-2026:4408-1 Security update for alloy SUSE / openSUSE Security Updates · Oct 1, 2026
- SUSE-SU-2026:23688-1 Security update for helm SUSE / openSUSE Security Updates · Sep 29, 2026
- SUSE-SU-2026:23864-1 Security update for distribution SUSE / openSUSE Security Updates · Sep 27, 2026
- SUSE-SU-2026:23852-1 Security update for distribution SUSE / openSUSE Security Updates · Sep 27, 2026
- openSUSE-SU-2026:21898-1 Security update for distribution SUSE / openSUSE Security Updates · Sep 25, 2026
- openSUSE-SU-2026:11828-1 amazon-cloudwatch-agent-1.300072.0-1.1 on GA media SUSE / openSUSE Security Updates · Sep 22, 2026
- openSUSE-SU-2026:11803-1 alloy-1.19.2-1.1 on GA media SUSE / openSUSE Security Updates · Sep 18, 2026
- SUSE-SU-2026:23522-1 Security update for helm SUSE / openSUSE Security Updates · Sep 15, 2026
- SUSE-SU-2026:4175-1 Security update for helm SUSE / openSUSE Security Updates · Sep 15, 2026
- SUSE-SU-2026:23506-1 Security update for helm SUSE / openSUSE Security Updates · Sep 14, 2026
- SUSE-SU-2026:23456-1 Security update for helm SUSE / openSUSE Security Updates · Sep 14, 2026
- SUSE-SU-2026:4045-1 Security update for amazon-cloudwatch-agent SUSE / openSUSE Security Updates · Sep 13, 2026
- openSUSE-SU-2026:21801-1 Security update for trivy SUSE / openSUSE Security Updates · Sep 10, 2026
- openSUSE-SU-2026:21809-1 Security update for helm SUSE / openSUSE Security Updates · Sep 10, 2026
- openSUSE-SU-2026:21793-1 Security update for hauler SUSE / openSUSE Security Updates · Sep 9, 2026
- openSUSE-SU-2026:11718-1 helm-4.2.4-3.1 on GA media SUSE / openSUSE Security Updates · Sep 9, 2026
- openSUSE-SU-2026:11697-1 distribution-registry-3.1.1-6.1 on GA media SUSE / openSUSE Security Updates · Sep 8, 2026
- openSUSE-SU-2026:11669-1 helm3-3.21.3-7.1 on GA media SUSE / openSUSE Security Updates · Sep 3, 2026
- openSUSE-SU-2026:11676-1 trivy-0.74.0-2.1 on GA media SUSE / openSUSE Security Updates · Sep 3, 2026
- openSUSE-SU-2026:11667-1 hauler-2.1.0-1.1 on GA media SUSE / openSUSE Security Updates · Sep 3, 2026