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CVE-2026-53715— Envoy Gateway: Wasm cache ServeHTTP reads mappingPath2Cache without lock

Quick assessment

Affected
envoyproxy gateway
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Envoy Gateway 是一个用于管理 Envoy Proxy 作为独立应用或基于 Kubernetes 的应用网关的开源项目。在 1.7.4 和 1.8.1 版本之前， 中的 在读取未加同步保护的普通映射 时， 在 EnvoyExtensionPolicy 转换过程中写入同一个 map。一个拥有 pod 网络访问权限（针对未认证端口 18002）且具有租户权限以频繁创建/销毁使用不同 Wasm URL 的策略的攻击者，可以通过发送大量 GET 请求，使某个请求的读取操作与写入操作发生重叠。Go 语言对并发 m

CVSS 5.3 · Medium EPSS 0.04% · P13

Possible ATT&CK Techniques 1 AI

T1231
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I. Basic Information for CVE-2026-53715

Vulnerability Information
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Vulnerability Title
Envoy Gateway: Wasm cache ServeHTTP reads mappingPath2Cache without lock
Source: CVE Program / CVE List V5
Vulnerability Description
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, HTTPServer.ServeHTTP in internal/wasm/httpserver.go reads the plain mappingPath2Cache map without synchronization while HTTPServer.Get writes the same map during EnvoyExtensionPolicy translation. An attacker with pod-network access to unauthenticated port 18002 and tenant permission to churn policies with distinct Wasm URLs can flood GET requests until a per-request reader overlaps a writer. Go's concurrent map read and write detection invokes runtime.throw, which the net/http connection recovery cannot catch, terminating the controller process and causing a timing-dependent, cross-tenant control-plane denial of service until Kubernetes restarts the pod. This issue is fixed in versions 1.7.4 and 1.8.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
使用共享资源的并发执行不恰当同步问题(竞争条件)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
envoyproxy gateway < 1.7.4 -

II. Public POCs for CVE-2026-53715

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III. Intelligence Information for CVE-2026-53715

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Patches & Fixes for CVE-2026-53715 (3)

Vendor Advisories for CVE-2026-53715 (1)

Vendor Pages for CVE-2026-53715 (2)

Same Patch Batch · envoyproxy · 2026-09-14 · 7 CVEs total

CVE-2026-53713 9.1 CRITICAL Envoy Gateway: Authentication Bypass via Improper Input Validation in EnvoyExtensionPolicy
CVE-2026-53714 7.4 HIGH Envoy Gateway: xDS Control Plane Information Disclosure when Envoy Gateway operates in Gat
CVE-2026-53716 6.5 MEDIUM Envoy Gateway: Wasm HTTP fetch decompresses gzip without output-size limit
CVE-2026-53719 6.5 MEDIUM Envoy Gateway: Nil-dereference when SecurityPolicy targets TCPRoute without spec.authoriza
CVE-2026-53717 6.5 MEDIUM Envoy Gateway: OCI layer extraction allocates make([]byte, h.Size) from untrusted tar head
CVE-2026-53718 6.4 MEDIUM Envoy Gateway custom backendRef cross-namespace ReferenceGrant bypass

IV. Related Vulnerabilities

Same product: gateway
Same vendor: envoyproxy
Same weakness: CWE-362

V. Comments for CVE-2026-53715

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