fix(security/HIGH/): Update module google.golang.org/grpc to v1.83.2 [SECURITY] - #7061
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…[SECURITY] | datasource | package | from | to | | ---------- | ---------------------- | ------- | ------- | | go | google.golang.org/grpc | v1.83.1 | v1.83.2 | Signed-off-by: renovate-sh-app[bot] <219655108+renovate-sh-app[bot]@users.noreply.github.com>
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🔍 Dependency Reviewgoogle.golang.org/grpc v1.83.1 → v1.83.2 — ✅ Safe
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This PR contains the following updates:
v1.83.1→v1.83.2gRPC-Go xDS servers: Denial of Service (DoS) via crash due to missing
:authorityandHostheadersCVE-2026-84445 / GHSA-2v4p-qf9q-27wj
More information
Details
A vulnerability exists in gRPC-Go servers configured with
xds.NewGRPCServer()where a crafted request missing both:authorityandHostheaders can cause a server panic, resulting in a Denial of Service (DoS).Servers built with
xds.NewGRPCServerinstall an xDS routing interceptor on every RPC. This interceptor looks up the request’s:authorityheader to pick a virtual host. The HTTP/2 server transport previously accepted requests that had neither:authoritynorHost. When this happened, the xDS routing interceptor attempted to access the first element of an empty slice of authorities, leading to an index out of bounds panic. Since the per-RPC goroutine does not recover from panics, the entire server process would terminate.This panic occurs in the interceptor pipeline, meaning the transport credentials handshake (TLS, mTLS, or ALTS) and HTTP/2 connection establishment must complete successfully before the crafted request can reach this logic.
Impact
An attacker can cause a complete outage of the gRPC server by sending a request missing both
:authorityandHostheaders, provided they can successfully establish a transport connection.Patches
The issue has been addressed in
master(and backported to1.83.2and1.82.2). The fix updates the HTTP/2 transport layer to reject requests missing both:authorityandHostheaders early, maintaining consistency with and other gRPC language implementations.Severity
High
References
This data is provided by the GitHub Advisory Database (CC-BY 4.0).
gRPC-Go xDS servers: Denial of Service (DoS) via crash due to missing
:authorityandHostheadersCVE-2026-84445 / GHSA-2v4p-qf9q-27wj
More information
Details
A vulnerability exists in gRPC-Go servers configured with
xds.NewGRPCServer()where a crafted request missing both:authorityandHostheaders can cause a server panic, resulting in a Denial of Service (DoS).Servers built with
xds.NewGRPCServerinstall an xDS routing interceptor on every RPC. This interceptor looks up the request’s:authorityheader to pick a virtual host. The HTTP/2 server transport previously accepted requests that had neither:authoritynorHost. When this happened, the xDS routing interceptor attempted to access the first element of an empty slice of authorities, leading to an index out of bounds panic. Since the per-RPC goroutine does not recover from panics, the entire server process would terminate.This panic occurs in the interceptor pipeline, meaning the transport credentials handshake (TLS, mTLS, or ALTS) and HTTP/2 connection establishment must complete successfully before the crafted request can reach this logic.
Impact
An attacker can cause a complete outage of the gRPC server by sending a request missing both
:authorityandHostheaders, provided they can successfully establish a transport connection.Patches
The issue has been addressed in
master(and backported to1.83.2and1.82.2). The fix updates the HTTP/2 transport layer to reject requests missing both:authorityandHostheaders early, maintaining consistency with and other gRPC language implementations.Severity
High
References
This data is provided by OSV and the GitHub Advisory Database (CC-BY 4.0).
Release Notes
grpc/grpc-go (google.golang.org/grpc)
v1.83.2: Release 1.83.2Compare Source
Security
:authorityandHostheaders with HTTP 400 and statusInternal. (#9365)Configuration
📅 Schedule: (UTC)
🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.
♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.
🔕 Ignore: Close this PR and you won't be reminded about this update again.
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