Affected: CleanStart: cert-manager-webhook-pdns-fips

Security vulnerability affects the cert-manager-webhook-pdns-fips package. This issue is resolved in later releases. See references for vulnerability details.

OpenTelemetry-Go Contrib is a collection of third-party packages for OpenTelemetry-Go. Starting in version 0.37.0 and prior to version 0.46.0, the grpc Unary Server Interceptor out of the box adds labels `net.peer.sock.addr` and `net.peer.sock.port` that have unbound cardinality. It leads to the server's potential memory exhaustion when many malicious requests are sent. An attacker can easily flood the peer address and port for requests. Version 0.46.0 contains a fix for this issue. As a workaround to stop being affected, a view removing the attributes can be used. The other possibility is to disable grpc metrics instrumentation by passing `otelgrpc.WithMeterProvider` option with `noop.NewMeterProvider`.

Affected: Go: go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc

### Summary

The grpc Unary Server Interceptor [opentelemetry-go-contrib/instrumentation/google.golang.org/grpc/otelgrpc/interceptor.go](https://github.com/open-telemetry/opentelemetry-go-contrib/blob/9d4eb7e7706038b07d33f83f76afbe13f53d171d/instrumentation/google.golang.org/grpc/otelgrpc/interceptor.go#L327)

``` // UnaryServerInterceptor returns a grpc.UnaryServerInterceptor suitable // for use in a grpc.NewServer call. func UnaryServerInterceptor(opts ...Option) grpc.UnaryServerInterceptor { ``` out of the box adds labels

- `net.peer.sock.addr` - `net.peer.sock.port`

that have unbound cardinality. It leads to the server's potential memory exhaustion when many malicious requests are sent.

### Details

An attacker can easily flood the peer address and port for requests.

### PoC

Apply the attached patch to the example and run the client multiple times. Observe how each request will create a unique histogram and how the memory consumption increases during it. ### Impact

In order to be affected, the program has to configure a metrics pipeline, use [UnaryServerInterceptor](https://github.com/open-telemetry/opentelemetry-go-contrib/blob/9d4eb7e7706038b07d33f83f76afbe13f53d171d/instrumentation/google.golang.org/grpc/otelgrpc/interceptor.go#L327), and does not filter any client IP address and ports via middleware or proxies, etc.

### Others

It is similar to already reported vulnerabilities.

* [GHSA-rcjv-mgp8-qvmr](https://github.com/open-telemetry/opentelemetry-go-…

etcd-3.5.11-1.1 on GA media

golang.org/x/net/html: Cross site scripting opentelemetry: DoS vulnerability in otelhttp opentelemetry-go-contrib: DoS vulnerability in otelgrpc due to unbound cardinality metrics ssh: Prefix truncation attack on Binary Packet Protocol (BPP) go-git: Maliciously crafted Git server replies can lead to path traversal and RCE on go-git clients

Security update for containerd

Affected: Ubuntu:25.10: golang-opentelemetry-contrib, Ubuntu:26.04:LTS: golang-opentelemetry-contrib

OpenTelemetry-Go Contrib is a collection of third-party packages for OpenTelemetry-Go. Starting in version 0.37.0 and prior to version 0.46.0, the grpc Unary Server Interceptor out of the box adds labels `net.peer.sock.addr` and `net.peer.sock.port` that have unbound cardinality. It leads to the server's potential memory exhaustion when many malicious requests are sent. An attacker can easily flood the peer address and port for requests. Version 0.46.0 contains a fix for this issue. As a workaround to stop being affected, a view removing the attributes can be used. The other possibility is to disable grpc metrics instrumentation by passing `otelgrpc.WithMeterProvider` option with `noop.NewMeterProvider`.

Ein entfernter, anonymer oder authentisierter Angreifer kann mehrere Schwachstellen in Red Hat OpenShift Container Platform ausnutzen, um einen Denial of Service Angriff durchzuführen.