CVE-2026-53715Network attack vector

Control-plane crash via unsynchronized Wasm cache access

Published Sep 14, 2026 · Updated Sep 14, 2026

Race condition in Envoy Gateway before 1.7.4 and 1.8.0-rc.0 through 1.8.0 allows remote authenticated users to crash the controller. HTTPServer.ServeHTTP reads mappingPath2Cache without synchronization while policy translation writes the same plain Go map, causing runtime.throw when the operations overlap. Exploitation requires pod-network access to unauthenticated port 18002 and permission to churn distinct Wasm policies; the crash interrupts the shared control plane until Kubernetes restarts the pod.

CVSS severity5.3
Medium
EPSS probability0.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Race condition in Envoy Gateway before 1.7.4 and 1.8.0-rc.0 through 1.8.0 allows remote authenticated users to crash the controller. HTTPServer.ServeHTTP reads mappingPath2Cache without synchronization while policy translation writes the same plain Go map, causing runtime.throw when the operations overlap. Exploitation requires pod-network access to unauthenticated port 18002 and permission to churn distinct Wasm policies; the crash interrupts the shared control plane until Kubernetes restarts the pod.

The record

CVE
CVE-2026-53715
Published
Sep 14, 2026
Updated
Sep 14, 2026
Vendor
Envoy Proxy
Product
Envoy Gateway
Classifications
CWE-362, T1499
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 14, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 1.7.4
  2. Affected versionversion=>= 1.8.0-rc.0, < 1.8.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Envoy Proxy · Envoy Gatewayversion=< 1.7.4; version=>= 1.8.0-rc.0, < 1.8.1

Published CVSS scores

5.3GitHubCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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