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Microsoft Security Response CenterCVE-2026-37236

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.

MediumVendor CVSS 5.3 / 10 1 CVE Published Sep 2, 2026 at 1:04 AM UTC
Get alerts for azl3 cert-manager 1.12.15-11 on Azure Linux

Summary

Mariner

Products covered

  • azl3 cert-manager 1.12.15-11 on Azure Linux 3.0

  • azl3 cf-cli 8.7.11-8 on Azure Linux 3.0

  • azl3 cloud-provider-kubevirt 0.5.1-6 on Azure Linux 3.0

  • azl3 docker-buildx 0.14.0-16 on Azure Linux 3.0

  • azl3 docker-compose 2.27.0-13 on Azure Linux 3.0

  • azl3 etcd 3.5.33-1 on Azure Linux 3.0

  • azl3 flannel 0.24.2-29 on Azure Linux 3.0

  • azl3 keda 2.14.1-16 on Azure Linux 3.0

Show 28 more products

  • azl3 kube-vip-cloud-provider 0.0.10-7 on Azure Linux 3.0

  • azl3 moby-containerd-cc 1.7.7-16 on Azure Linux 3.0

  • azl3 telegraf 1.31.0-28 on Azure Linux 3.0

  • azl3 containerd2 2.2.4-8 on Azure Linux 3.0

  • azl3 keda 2.14.1-18 on Azure Linux 3.0

  • azl3 kube-vip-cloud-provider 0.0.10-8 on Azure Linux 3.0

  • azl3 moby-engine 25.0.3-20 on Azure Linux 3.0

  • azl3 prometheus-adapter 0.12.0-9 on Azure Linux 3.0

  • azl3 cf-cli 8.7.11-9 on Azure Linux 3.0

  • azl3 flannel 0.24.2-32 on Azure Linux 3.0

  • azl3 moby-containerd-cc 1.7.7-17 on Azure Linux 3.0

  • azl3 containerd2 2.2.4-6 on Azure Linux 3.0

  • azl3 cri-tools 1.32.0-7 on Azure Linux 3.0

  • azl3 kubernetes 1.30.10-27 on Azure Linux 3.0

  • azl3 moby-engine 25.0.3-19 on Azure Linux 3.0

  • azl3 prometheus-adapter 0.12.0-7 on Azure Linux 3.0

  • azl3 cert-manager 1.12.15-12 on Azure Linux 3.0

  • azl3 cloud-provider-kubevirt 0.5.1-7 on Azure Linux 3.0

  • azl3 flannel 0.24.2-31 on Azure Linux 3.0

  • azl3 kubernetes 1.30.10-29 on Azure Linux 3.0

  • azl3 telegraf 1.31.0-31 on Azure Linux 3.0

  • azl3 containerd2 2.3.4-1 on Azure Linux 3.0

  • azl3 cri-tools 1.32.0-8 on Azure Linux 3.0

  • azl3 docker-buildx 0.14.0-17 on Azure Linux 3.0

  • azl3 docker-compose 2.27.0-14 on Azure Linux 3.0

  • azl3 keda 2.14.1-19 on Azure Linux 3.0

  • azl3 kubernetes 1.30.10-30 on Azure Linux 3.0

  • azl3 prometheus-adapter 0.12.0-10 on Azure Linux 3.0

Remediation

Release Notes

Vendor-listed fixes

  • 8.7.11-9

  • 0.14.0-17

  • 2.27.0-14

  • 3.5.35-1

  • 1.7.7-17

  • 2.2.4-9

  • 2.14.1-19

  • 0.0.10-10

Show 9 more fixes

  • 25.0.3-21

  • 0.12.0-10

  • 0.24.2-32

  • 1.32.0-8

  • 1.12.15-14

  • 0.5.1-9

  • 1.30.10-30

  • 1.31.0-33

  • 2.3.4-1

CVEs in this advisory 1

CVE-2026-37236
Update history

What changed in later vendor updates

SecurityAlert records field-level changes from the point we begin following a bulletin. Earlier vendor changes may not have a field-by-field record.

    • Added fixed versions: 3.5.35-1.
    • The vendor changed the advisory's last-updated date.
    • Added fixed versions: 25.0.3-21.
    • The vendor changed the advisory's last-updated date.
    • Added affected products: azl3 cert-manager 1.12.15-12 on Azure Linux 3.0, azl3 cf-cli 8.7.11-9 on Azure Linux 3.0, azl3 cloud-provider-kubevirt 0.5.1-7 on Azure Linux 3.0, azl3 containerd2 2.2.4-8 on Azure Linux 3.0, azl3 containerd2 2.3.4-1 on....
    • Added fixed versions: 0.0.10-10, 0.5.1-9, 0.12.0-10, 0.14.0-17, 0.24.2-32.
    • The vendor changed its remediation guidance.

Updates

  1. Published by Microsoft Security Response Center

    The publication date reported by the vendor.

  2. Added to SecurityAlert

    We collected the advisory from the official source.

  3. Updated by Microsoft Security Response Center

    The vendor changed the advisory after it was first published.

  4. Confirmed at the source

    Our collector saw this advisory during a later source check.

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