> CVE-2026-53716 [MEDIUM]

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PUBLISHED
2026-09-14 21:17
MODIFIED
2026-09-14 21:17
CVSS_SCORE V3
6.5
EPSS (Prob. Exploit)
0.72%
Top 47.2%
DATA SOURCES:
NVD đź”— 2026-09-14 CWE MITRE đź”— 2026-10-01 FIRST EPSS đź”— 2026-10-18 GITHUB đź”— 2026-09-24 OSV đź”— 2026-10-26

> 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.

> AFFECTED_PRODUCTS

ℹ️ Aucun produit affecté n'a encore été publié par NVD pour cette CVE.

> CVSS V3 METRICS

CVSS_VECTOR
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EXPLOITABILITY
2.8
IMPACT
3.6

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Métrique Valeur Interprétation
AV (Vecteur d'Attaque)
Attack Vector
Network (N)
Exploit possible à distance via réseau (HTTP, API, etc.)
AC (Complexité d'Attaque)
Attack Complexity
Low (L)
Peu de conditions requises pour exploiter
PR (Privilèges Requis)
Privileges Required
Low (L)
Authentifié avec compte utilisateur basique
UI (Interaction Utilisateur)
User Interaction
None (N)
Aucune interaction utilisateur nécessaire
S (Périmètre)
Scope
Unchanged (U)
Impact reste dans le périmètre du composant compromis
C (Impact Confidentialité)
Confidentiality Impact
None (N)
Aucune divulgation d'informations
I (Impact Intégrité)
Integrity Impact
None (N)
Aucune modification de données possible
A (Impact Disponibilité)
Availability Impact
High (H)
Interruption totale du service possible

> RÉSUMÉ DES IMPACTS

Confidentialité
None
Aucune divulgation d'informations
Intégrité
None
Aucune modification de données possible
Disponibilité
High
Interruption totale du service possible

> WEAKNESSES

CWE-789

> CWE DETAILED DESCRIPTIONS

CWE-789: Memory Allocation with Excessive Size Value - The product allocates memory based on an untrusted, large size value, but it does not ensure that the size is within expected limits, allowing arbitrary amounts of memory to be allocated.

> GITHUB SECURITY ADVISORY

GHSA-cxpq-8v7q-cg56 MODERATE

Envoy Gateway: Wasm HTTP fetch decompresses gzip without output-size limit

AFFECTED PACKAGES:
GO / github.com/envoyproxy/gateway
< 1.7.4
Fixed in: 1.7.4
GO / github.com/envoyproxy/gateway
>= 1.8.0-rc.0, < 1.8.1
Fixed in: 1.8.1

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

Envoy Gateway: Wasm HTTP fetch decompresses gzip without output-size limit

AFFECTED PACKAGES:
Unknown / Unknown
18 versions affected
ALIASES:
BIT-envoy-gateway-2026-53716, GHSA-cxpq-8v7q-cg56, GO-2026-6006

> HISTORIQUE DES MODIFICATIONS

Première apparition
14/09/2026 21:17
Source: NVD
📊 ENRICHISSEMENT 01/10/2026 06:01
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-789: Memory Allocation with Excessive Size Value - The product allocates memory based on an untrusted, large size value, but it does not ensure that the size is within expected limits, allowing ar...
Total des modifications: 1 Dernière mise à jour: 3 weeks ago

> REFERENCES

https://github.com/envoyproxy/gateway/commit/5a78db82b7cf4fc5bebbeda2c5095289203...
https://github.com/envoyproxy/gateway/commit/96e2b750868a459ace4b8b68e6a6e4fb015...
https://github.com/envoyproxy/gateway/commit/b4737180c7e597490c6363075c565fa8cf2...
https://github.com/envoyproxy/gateway/pull/9171
https://github.com/envoyproxy/gateway/pull/9172
https://github.com/envoyproxy/gateway/pull/9173
https://github.com/envoyproxy/gateway/releases/tag/v1.7.4
https://github.com/envoyproxy/gateway/releases/tag/v1.8.1
https://github.com/envoyproxy/gateway/security/advisories/GHSA-cxpq-8v7q-cg56
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