6.5

CVE-2026-53716: envoyproxy gateway

CVSS: 6.5v3.1MediumAwaiting analysis
AliasesCGA-5vh4-frjr-w6vmCGA-5x2v-pc7w-2fwrCGA-6mvw-8pq5-5vhc
Published 14-09-2026Last modified 16-09-2026
Open JSON

Vulnerability summary

CVE-2026-53716 is a medium (CVSS 6.5) vulnerability in envoyproxy gateway. EPSS estimates a 0.71% chance of exploitation in the next 30 days, higher than 52.8% of scored vulnerabilities.

Overall risk
26/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.71%
0%100%
Low · +0.03 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1 · Related 2
OPENSUSE-SU-2026:21483-1CGA-C787-MXQ5-XHGV

Timeline

  1. 14-09-2026
    PublishedVulnerability first disclosed.
  2. 16-09-2026
    Last modifiedVulnerability information updated.

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, getFileFromGZ in internal/wasm/httpfetcher.go calls io.ReadAll on a gzip.Reader without limiting decompressed output when a tenant-controlled EnvoyExtensionPolicy.spec.wasm[].code.http.url points to a reachable compressed Wasm payload. The 256 MiB compressed-input cap does not constrain the expanded size, no operator Wasm URL allowlist exists, and the optional sha256 check occurs only after decompression, so a comparatively small gzip stream can force a multi-gigabyte allocation in the shared controller. The resulting out-of-memory termination restarts the controller, re-reconciles the persistent custom resource, and can create a persistent cross-tenant control-plane outage. This issue is fixed in versions 1.7.4 and 1.8.1.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.71%

Chance of exploitation in the next 30 days

Percentile

53%

Versus all other CVEs

30-day change

+0.03 pp

From 0.69% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.71%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Chainguard37 products
  • datadog-agent-7.76All versions (No fix recorded)
  • datadog-cluster-agent-7.73< 7.73.3-r23
  • datadog-cluster-agent-7.74< 7.74.1-r24
  • datadog-cluster-agent-7.75All versions (No fix recorded)
  • datadog-cluster-agent-7.76< 7.76.3-r32
Wolfi11 products
  • datadog-agent-7.76All versions (No fix recorded)
  • datadog-cluster-agent-7.73< 7.73.3-r23
  • datadog-cluster-agent-7.75All versions (No fix recorded)
  • datadog-cluster-agent-7.76< 7.76.3-r32
  • datadog-cluster-agent-7.77< 7.77.3-r23
Envoyproxy1 product
  • gateway< 1.7.4 | ≥ 1.8.0-rc.0, < 1.8.1
Github.com/envoyproxy1 product
  • gateway< 1.7.4 | ≥ 1.8.0-rc.0, < 1.8.1

4 vendors · 50 products

References

10 links