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.
CVE-2026-37236 is fixed in 7 products on 1 platform, first by DEBIAN-CVE-2026-37236, released September 2, 2026. It is not reported as exploited. Patch Radar priority: High.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| alloy · opensuse-leap 16.0 | 1.19.2-160000.1.1 | OPENSUSE-SU-2026:22032-1 | Oct 6, 2026 |
| alloy · sles 15.7 | 1.19.2-150700.15.29.1 | SUSE-SU-2026:4408-1 | Oct 1, 2026 |
| alloy · sles 16.0 | 1.19.2-160000.1.1 | SUSE-SU-2026:24148-1 | Oct 6, 2026 |
| amazon-cloudwatch-agent · sles 15.6 | 1.300069.0-150400.9.10.1 | SUSE-SU-2026:4045-1 | Sep 7, 2026 |
| amazon-cloudwatch-agent · sles 15.7 | 1.300069.0-150400.9.10.1 | SUSE-SU-2026:4045-1 | Sep 7, 2026 |
| distribution · opensuse-leap 16.0 | 3.1.1-160000.3.1 | OPENSUSE-SU-2026:21898-1 | Sep 21, 2026 |
| distribution · sles 16.0 | 3.1.1-160000.3.1 | SUSE-SU-2026:23864-1 | Sep 21, 2026 |
| golang-github-grpc-ecosystem-grpc-gateway · Debian 14 | 2.30.0-1 | DEBIAN-CVE-2026-37236 | Sep 2, 2026 |
| hauler · opensuse-leap 16.0 | 2.1.0-bp160.1.1 | OPENSUSE-SU-2026:21793-1 | Sep 3, 2026 |
| helm · opensuse-leap 16.0 | 3.21.3-160000.2.1 | OPENSUSE-SU-2026:21809-1 | Sep 8, 2026 |
| helm · sles 15.6 | 3.21.3-150000.1.96.1 | SUSE-SU-2026:4175-1 | Sep 14, 2026 |
| helm · sles 15.7 | 3.21.3-150000.1.96.1 | SUSE-SU-2026:4175-1 | Sep 14, 2026 |
| helm · sles 16.0 | 3.21.3-160000.2.1 | SUSE-SU-2026:23688-1 | Sep 8, 2026 |
| trivy · opensuse-leap 16.0 | 0.74.0-160000.2.1 | OPENSUSE-SU-2026:21801-1 | Sep 7, 2026 |
Patch Radar data is free to use with attribution. Terms and how to credit it.
Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.