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vuln-cve/data/2026/53xxx/CVE-2026-53716.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-53716",
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"state": "PUBLISHED",
"assignerShortName": "GitHub_M",
"dateReserved": "2026-06-10T16:43:31.241Z",
"datePublished": "2026-09-14T20:15:51.441Z",
"dateUpdated": "2026-09-16T16:21:20.674Z"
},
"containers": {
"cna": {
"title": "Envoy Gateway: Wasm HTTP fetch decompresses gzip without output-size limit",
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-789",
"lang": "en",
"description": "CWE-789: Memory Allocation with Excessive Size Value",
"type": "CWE"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
}
}
],
"references": [
{
"name": "https://github.com/envoyproxy/gateway/security/advisories/GHSA-cxpq-8v7q-cg56",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/envoyproxy/gateway/security/advisories/GHSA-cxpq-8v7q-cg56"
},
{
"name": "https://github.com/envoyproxy/gateway/pull/9171",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/envoyproxy/gateway/pull/9171"
},
{
"name": "https://github.com/envoyproxy/gateway/pull/9172",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/envoyproxy/gateway/pull/9172"
},
{
"name": "https://github.com/envoyproxy/gateway/pull/9173",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/envoyproxy/gateway/pull/9173"
},
{
"name": "https://github.com/envoyproxy/gateway/commit/5a78db82b7cf4fc5bebbeda2c50952892038a464",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/envoyproxy/gateway/commit/5a78db82b7cf4fc5bebbeda2c50952892038a464"
},
{
"name": "https://github.com/envoyproxy/gateway/commit/96e2b750868a459ace4b8b68e6a6e4fb0152b9b7",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/envoyproxy/gateway/commit/96e2b750868a459ace4b8b68e6a6e4fb0152b9b7"
},
{
"name": "https://github.com/envoyproxy/gateway/commit/b4737180c7e597490c6363075c565fa8cf24eead",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/envoyproxy/gateway/commit/b4737180c7e597490c6363075c565fa8cf24eead"
},
{
"name": "https://github.com/envoyproxy/gateway/releases/tag/v1.7.4",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/envoyproxy/gateway/releases/tag/v1.7.4"
},
{
"name": "https://github.com/envoyproxy/gateway/releases/tag/v1.8.1",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/envoyproxy/gateway/releases/tag/v1.8.1"
}
],
"affected": [
{
"vendor": "envoyproxy",
"product": "gateway",
"versions": [
{
"version": "< 1.7.4",
"status": "affected"
},
{
"version": ">= 1.8.0-rc.0, < 1.8.1",
"status": "affected"
}
]
}
],
"providerMetadata": {
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M",
"dateUpdated": "2026-09-14T20:15:51.441Z"
},
"descriptions": [
{
"lang": "en",
"value": "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."
}
],
"source": {
"advisory": "GHSA-cxpq-8v7q-cg56",
"discovery": "UNKNOWN"
}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-09-16T16:21:03.789017Z",
"id": "CVE-2026-53716",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-09-16T16:21:20.674Z"
}
}
]
}
}