Read the docs
TI-2026-38735 Aliases CVE-2026-53715GHSA-8fv2-88gg-hm7q

Envoy Gateway: Wasm cache ServeHTTP reads mappingPath2Cache without lock

Priority LOW 24CWE-362Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
High
Impact type
—
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 1 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00467 40th percentileScored 2026-11-07
Fix Partial gateway (envoyproxy): 1.7.4, 1.8.1github.com/envoyproxy/gateway (Go): 1.8.1, 1.7.4Red Hat: 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
envoyproxygatewaybefore 1.7.4; 1.8.0-rc.0 to before 1.8.11.7.4, 1.8.1Patch availableCNA
—github.com/envoyproxy/gateway (Go)1.8.0-rc.0 to before 1.8.11.8.1Patch availableGHSA-8fv2-88gg-hm7q
—github.com/envoyproxy/gateway (Go)before 1.7.41.7.4Patch availableGHSA-8fv2-88gg-hm7q
  • gateway Vendorenvoyproxy Affected before 1.7.4; 1.8.0-rc.0 to before 1.8.1 Fixed in 1.7.4, 1.8.1 Patch available CNA
  • github.com/envoyproxy/gateway (Go) Vendor— Affected 1.8.0-rc.0 to before 1.8.1 Fixed in 1.8.1 Patch available GHSA-8fv2-88gg-hm7q
  • github.com/envoyproxy/gateway (Go) Vendor— Affected before 1.7.4 Fixed in 1.7.4 Patch available GHSA-8fv2-88gg-hm7q

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:envoyproxy:gateway:*:*:*:*:*:*:*:*——envoyproxy
  • cpe:2.3:a:envoyproxy:gateway:*:*:*:*:*:*:*:* Versions — — ·envoyproxy

Remediation

  • Fix · CNA gateway (envoyproxy) Fixed in 1.7.4, 1.8.1
  • Fix · GHSA-8fv2-88gg-hm7q github.com/envoyproxy/gateway (Go) Fixed in 1.8.1 Advisory →
  • Fix · GHSA-8fv2-88gg-hm7q github.com/envoyproxy/gateway (Go) Fixed in 1.7.4 Advisory →

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Connectivity Link 1AffectedNo fix yet: Fix deferred

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-53715
  2. 2026-10-03 Alias added: GHSA-8fv2-88gg-hm7q

References

Other 10

  • TI-2026-79288 Out-of-bounds write in Google Brotli decoder KEVCVSS 4.0CRITICAL 9.2
  • TI-2023-23979 The HTTP/2 protocol allows a denial of service (server resource consumption) because… KEVCVSS 3.1HIGH 7.5
  • TI-2024-20001 HTTP/2: CPU exhaustion due to CONTINUATION frame flood CVSS 3.1HIGH 7.5
  • TI-2024-18524 HTTP/2: memory exhaustion due to CONTINUATION frame flood CVSS 3.1HIGH 7.5
  • TI-2023-12215 Envoy client may fake the header `x-envoy-original-path` CVSS 3.1CRITICAL 9.1
  • TI-2023-18002 Envoy vulnerable to OAuth2 credentials exploit with permanent validity CVSS 3.1CRITICAL 9.8
See all 136 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences