CVE-2026-37236 Affecting golang-github-grpc-ecosystem-grpc-gateway package, versions <2.30.0-1


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.44% (37th percentile)

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  • Snyk IDSNYK-DEBIAN14-GOLANGGITHUBGRPCECOSYSTEMGRPCGATEWAY-19427511
  • published29 Aug 2026
  • disclosed28 Aug 2026

Introduced: 28 Aug 2026

NewCVE-2026-37236  (opens in a new tab)

How to fix?

Upgrade Debian:14 golang-github-grpc-ecosystem-grpc-gateway to version 2.30.0-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream golang-github-grpc-ecosystem-grpc-gateway package and not the golang-github-grpc-ecosystem-grpc-gateway package as distributed by Debian. See How to fix? for Debian:14 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1