CVE-2026-53717

The record

Envoy Gateway is an open source project for managing Envoy Proxy as a standalone or Kubernetes-based application gateway. Prior to 1.7.4 and 1.8.1, internal/wasm/imagefetcher.go follows tenant-controlled EnvoyExtensionPolicy spec.wasm[].code.image.url values to Docker or OCI Wasm layers, and extractWasmPluginBinary uses the untrusted tar-header h.Size value to allocate memory before validating the entry name or declared size. A small PAX or GNU tar header can therefore claim a multi-terabyte entry even though the surrounding LimitReader restricts only the bytes read from the stream, and no registry allowlist prevents a permitted tenant from selecting an attacker-controlled registry that the controller can reach. The allocation is attempted for every tar entry and can cause an unrecoverable Go runtime out-of-memory failure; because the custom resource persists, reconciliation repeatedly crash-loops the shared controller and causes a single-request, non-volumetric, cluster-wide control-plane denial of service. This issue is fixed in versions 1.7.4 and 1.8.1.

Affected packages

Related vulnerabilities

• CVE-2026-77301 adm-zip is a JavaScript library for creating and extracting ZIP archives in Node.js. CWE-789
• CVE-2026-77410 RabbitMQ amqp091-go is a Go AMQP 0.9.1 client. CWE-789
• CVE-2026-53716 Envoy Gateway is an open source project for managing Envoy Proxy as a standalone or… CWE-789
• CVE-2026-77354 kin-openapi is a Go project for handling OpenAPI files. CWE-789
• CVE-2026-69219 The RabbitMQ Java client library allows Java and JVM-based applications to connect to and… CWE-789
• CVE-2026-66485 GNU cpio is vulnerable to an uncontrolled memory allocation in the make_path function at… CWE-789
• CVE-2026-59844 A flaw was found in libssh. CWE-789
• CVE-2026-40378 Memory allocation with excessive size value in Windows Local Security Authority Subsystem… CWE-789