CVE-2026-37236
Publication date 31 August 2026
Last updated 31 August 2026
Ubuntu priority
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.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| golang-github-grpc-ecosystem-grpc-gateway | 26.04 LTS resolute |
Needs evaluation
|
| 24.04 LTS noble |
Needs evaluation
|
|
| 22.04 LTS jammy |
Needs evaluation
|
|
| 20.04 LTS focal |
Needs evaluation
|
|
| 18.04 LTS bionic |
Needs evaluation
|
References
Other references
- https://www.cve.org/CVERecord?id=CVE-2026-37236
- https://github.com/grpc-ecosystem/grpc-gateway/commit/72123cd4f32545f6e1376873f412dcdcbcf29acc (v2.29.0)
- https://github.com/grpc-ecosystem/grpc-gateway
- https://github.com/grpc-ecosystem/grpc-gateway/commit/72123cd4f32545f6e1376873f412dcdcbcf29acc
- https://s00me00ne.com/cve/cve-2026-37236/