This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-37236 →

DEBIAN-CVE-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 with...

Original description

The description as published by the source.

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.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:12 golang-github-grpc-ecosystem-grpc-gateway

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:13 golang-github-grpc-ecosystem-grpc-gateway

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:14 golang-github-grpc-ecosystem-grpc-gateway

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.30.0-1"}]}]

References

advisory security-tracker.debian.org