{"id":"EUVD-2026-78069","enisaUuid":"c3489c8d-77eb-3527-a24f-83ece967836a","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, internal/wasm/imagefetcher.go follows tenant-controlled EnvoyExtensionPolicy spec.wasm[].code.image.url values to Docker or OCI Wasm layers, and extractWasmPluginBinary uses the untrusted tar-header h.Size value to allocate memory before validating the entry name or declared size. A small PAX or GNU tar header can therefore claim a multi-terabyte entry even though the surrounding LimitReader restricts only the bytes read from the stream, and no registry allowlist prevents a permitted tenant from selecting an attacker-controlled registry that the controller can reach. The allocation is attempted for every tar entry and can cause an unrecoverable Go runtime out-of-memory failure; because the custom resource persists, reconciliation repeatedly crash-loops the shared controller and causes a single-request, non-volumetric, cluster-wide control-plane denial of service. This issue is fixed in versions 1.7.4 and 1.8.1.","datePublished":"Sep 14, 2026, 8:09:44 PM","dateUpdated":"Sep 15, 2026, 7:30:12 PM","baseScore":6.5,"baseScoreVersion":"3.1","baseScoreVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","references":"https://github.com/envoyproxy/gateway/security/advisories/GHSA-h7pq-86h8-rp5x\nhttps://github.com/envoyproxy/gateway/pull/9171\nhttps://github.com/envoyproxy/gateway/pull/9172\nhttps://github.com/envoyproxy/gateway/pull/9173\nhttps://github.com/envoyproxy/gateway/commit/5a78db82b7cf4fc5bebbeda2c50952892038a464\nhttps://github.com/envoyproxy/gateway/commit/96e2b750868a459ace4b8b68e6a6e4fb0152b9b7\nhttps://github.com/envoyproxy/gateway/commit/b4737180c7e597490c6363075c565fa8cf24eead\nhttps://github.com/envoyproxy/gateway/releases/tag/v1.7.4\nhttps://github.com/envoyproxy/gateway/releases/tag/v1.8.1\n","aliases":"CVE-2026-53717\nGHSA-h7pq-86h8-rp5x\n","assigner":"GitHub_M","epss":0.72,"enisaIdProduct":[{"id":"3b67d9c5-0712-3621-9f15-782b1242a01b","product":{"name":"Gateway","vendor":{"name":"NetScaler"}},"product_version":"\u003c 1.7.4"},{"id":"c1075f8b-13e8-35ca-b155-ea17674221fc","product":{"name":"Gateway","vendor":{"name":"NetScaler"}},"product_version":"1.8.0-rc.0, \u003c 1.8.1"}],"enisaIdVendor":[{"id":"0c42ad06-c2b2-33ff-8138-b789e57cd019","vendor":{"name":"envoyproxy"}}],"enisaIdVulnerability":[{"id":"586e8f90-c366-331b-aa64-5d0c36242d68","vulnerability":{"id":"CVE-2026-53717","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, internal/wasm/imagefetcher.go follows tenant-controlled EnvoyExtensionPolicy spec.wasm[].code.image.url values to Docker or OCI Wasm layers, and extractWasmPluginBinary uses the untrusted tar-header h.Size value to allocate memory before validating the entry name or declared size. A small PAX or GNU tar header can therefore claim a multi-terabyte entry even though the surrounding LimitReader restricts only the bytes read from the stream, and no registry allowlist prevents a permitted tenant from selecting an attacker-controlled registry that the controller can reach. The allocation is attempted for every tar entry and can cause an unrecoverable Go runtime out-of-memory failure; because the custom resource persists, reconciliation repeatedly crash-loops the shared controller and causes a single-request, non-volumetric, cluster-wide control-plane denial of service. This issue is fixed in versions 1.7.4 and 1.8.1.","datePublished":"Sep 14, 2026, 8:09:44 PM","dateUpdated":"Sep 15, 2026, 7:30:12 PM","status":"PUBLISHED","baseScore":6.5,"baseScoreVersion":"3.1","baseScoreVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","references":"https://github.com/envoyproxy/gateway/security/advisories/GHSA-h7pq-86h8-rp5x\nhttps://github.com/envoyproxy/gateway/pull/9171\nhttps://github.com/envoyproxy/gateway/pull/9172\nhttps://github.com/envoyproxy/gateway/pull/9173\nhttps://github.com/envoyproxy/gateway/commit/5a78db82b7cf4fc5bebbeda2c50952892038a464\nhttps://github.com/envoyproxy/gateway/commit/96e2b750868a459ace4b8b68e6a6e4fb0152b9b7\nhttps://github.com/envoyproxy/gateway/commit/b4737180c7e597490c6363075c565fa8cf24eead\nhttps://github.com/envoyproxy/gateway/releases/tag/v1.7.4\nhttps://github.com/envoyproxy/gateway/releases/tag/v1.8.1\n","enisa_id":"EUVD-2026-78069\n","assigner":"GitHub_M","epss":0.72,"dataProcessed":"Nov 11, 2026, 7:22:01 AM","vulnerabilityProduct":[{"id":"495c6435-ba16-38d1-ade9-4a355ae65791","product":{"name":"Gateway","vendor":{"name":"NetScaler"}},"product_version":"\u003c 1.7.4"},{"id":"77a3eb0b-3928-3680-8adc-6fb79f68fd48","product":{"name":"Gateway","vendor":{"name":"NetScaler"}},"product_version":"1.8.0-rc.0, \u003c 1.8.1"}],"vulnerabilityVendor":[{"id":"13278f17-4807-3242-928d-e02bacac8c3b","vendor":{"name":"envoyproxy"}}]}},{"id":"a89c8b81-5694-3c69-a4f7-85d27d20bcf3","vulnerability":{"id":"GHSA-h7pq-86h8-rp5x","description":"Envoy Gateway: OCI layer extraction allocates make([]byte, h.Size) from untrusted tar header","datePublished":"Jul 16, 2026, 7:20:05 PM","dateUpdated":"Jul 16, 2026, 7:20:05 PM","baseScore":0.0,"references":"https://github.com/envoyproxy/gateway/security/advisories/GHSA-h7pq-86h8-rp5x\nhttps://github.com/envoyproxy/gateway\n","enisa_id":"EUVD-2026-78069\n","aliases":"CVE-2026-53717\nGHSA-h7pq-86h8-rp5x\n","epss":0.0,"dataProcessed":"Nov 9, 2026, 3:50:23 PM","vulnerabilityProduct":[],"vulnerabilityVendor":[]}}],"enisaIdAdvisory":[]}