194 lines
8.5 KiB
JSON
194 lines
8.5 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-73548",
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"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"state": "PUBLISHED",
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"assignerShortName": "GitHub_M",
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"dateReserved": "2026-08-12T20:53:46.379Z",
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"datePublished": "2026-09-21T19:35:15.275Z",
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"dateUpdated": "2026-09-24T22:35:14.446Z"
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},
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"containers": {
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"cna": {
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"title": "Envoy: Cross-user response poisoning via a generic (non-WebSocket) HTTP upgrade on Envoy's shared backend pool",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-444",
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"lang": "en",
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"description": "CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')",
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"type": "CWE"
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}
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]
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"attackComplexity": "LOW",
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"attackVector": "NETWORK",
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"availabilityImpact": "NONE",
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"baseScore": 7.5,
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"baseSeverity": "HIGH",
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"confidentialityImpact": "HIGH",
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"integrityImpact": "NONE",
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"privilegesRequired": "NONE",
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"scope": "UNCHANGED",
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"userInteraction": "NONE",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
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"version": "3.1"
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}
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}
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],
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"references": [
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{
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"name": "https://github.com/envoyproxy/envoy/security/advisories/GHSA-3vhp-c83q-jqc2",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/envoyproxy/envoy/security/advisories/GHSA-3vhp-c83q-jqc2"
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},
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{
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"name": "https://github.com/envoyproxy/envoy/commit/309855626966cff176155c821043ed3b44671361",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/envoyproxy/envoy/commit/309855626966cff176155c821043ed3b44671361"
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},
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{
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"name": "https://github.com/envoyproxy/envoy/commit/3c7998545a9c9fb3933a4bc1907d92f0e752bc2b",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/envoyproxy/envoy/commit/3c7998545a9c9fb3933a4bc1907d92f0e752bc2b"
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},
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{
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"name": "https://github.com/envoyproxy/envoy/commit/4633b8cce3d15b8734eefe232e30c12b0140b91c",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/envoyproxy/envoy/commit/4633b8cce3d15b8734eefe232e30c12b0140b91c"
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},
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{
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"name": "https://github.com/envoyproxy/envoy/commit/bd6711f2617658e28dfa3df3dace6bfe3cfc0766",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/envoyproxy/envoy/commit/bd6711f2617658e28dfa3df3dace6bfe3cfc0766"
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},
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{
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"name": "https://github.com/envoyproxy/envoy/releases/tag/v1.36.10",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/envoyproxy/envoy/releases/tag/v1.36.10"
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},
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{
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"name": "https://github.com/envoyproxy/envoy/releases/tag/v1.37.6",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/envoyproxy/envoy/releases/tag/v1.37.6"
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},
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{
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"name": "https://github.com/envoyproxy/envoy/releases/tag/v1.38.4",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/envoyproxy/envoy/releases/tag/v1.38.4"
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},
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{
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"name": "https://github.com/envoyproxy/envoy/releases/tag/v1.39.1",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/envoyproxy/envoy/releases/tag/v1.39.1"
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}
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],
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"affected": [
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{
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"vendor": "envoyproxy",
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"product": "envoy",
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"versions": [
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{
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"version": "< 1.36.10",
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"status": "affected"
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},
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{
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"version": ">= 1.37.0, < 1.37.6",
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"status": "affected"
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},
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{
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"version": ">= 1.38.0, < 1.38.4",
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"status": "affected"
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},
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{
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"version": ">= 1.39.0, < 1.39.1",
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"status": "affected"
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}
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]
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}
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],
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"providerMetadata": {
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"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"shortName": "GitHub_M",
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"dateUpdated": "2026-09-21T19:35:15.275Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.36.10, 1.37.6, 1.38.4, and 1.39.1, Envoy forwards data for a configured non-WebSocket HTTP upgrade before the upstream accepts the upgrade. An unauthenticated HTTP/2 client can place a complete HTTP/1.1 request in extended CONNECT data; Envoy downgrades the request, writes the data unframed to a keep-alive HTTP/1.1 upstream, and returns the socket to the shared pool while the smuggled response remains queued. A different downstream client can then receive the attacker's response. The relevant scope boundary is that webSocket upgrades, plain CONNECT, disabled backend keep-alive, per-downstream pools, and max_requests_per_connection set to 1 are not affected by the demonstrated path. This issue is fixed in versions 1.36.10, 1.37.6, 1.38.4, and 1.39.1."
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}
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],
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"source": {
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"advisory": "GHSA-3vhp-c83q-jqc2",
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"discovery": "UNKNOWN"
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}
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},
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"adp": [
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{
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"references": [
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{
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"url": "https://github.com/envoyproxy/envoy/security/advisories/GHSA-3vhp-c83q-jqc2",
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"tags": [
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"exploit"
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]
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}
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],
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2026-09-24T22:34:49.061262Z",
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"id": "CVE-2026-73548",
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"options": [
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{
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"Exploitation": "poc"
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},
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{
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"Automatable": "yes"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"role": "CISA Coordinator",
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"version": "2.0.3"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-09-24T22:35:14.446Z"
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}
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}
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]
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}
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} |