195 lines
8.5 KiB
JSON
195 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-2026-72916",
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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": "2026-08-10T17:57:26.143Z",
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"datePublished": "2026-08-10T21:19:02.908Z",
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"dateUpdated": "2026-08-13T15:13:23.011Z"
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},
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"containers": {
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"cna": {
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"title": "Mastodon: SSRF Protection Bypass via IPv4-compatible IPv6 Addresses",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-918",
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"lang": "en",
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"description": "CWE-918: Server-Side Request Forgery (SSRF)",
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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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"descriptions": [
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{
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"cweId": "CWE-1286",
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"lang": "en",
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"description": "CWE-1286: Improper Validation of Syntactic Correctness of Input",
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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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"cvssV4_0": {
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"attackVector": "NETWORK",
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"attackComplexity": "HIGH",
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"attackRequirements": "PRESENT",
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"privilegesRequired": "NONE",
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"userInteraction": "NONE",
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"vulnConfidentialityImpact": "NONE",
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"vulnIntegrityImpact": "NONE",
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"vulnAvailabilityImpact": "NONE",
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"subConfidentialityImpact": "LOW",
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"subIntegrityImpact": "LOW",
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"subAvailabilityImpact": "LOW",
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"baseScore": 6.3,
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"baseSeverity": "MEDIUM",
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"vectorString": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:L",
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"version": "4.0"
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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/mastodon/mastodon/security/advisories/GHSA-vwhj-3g83-v276",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/mastodon/mastodon/security/advisories/GHSA-vwhj-3g83-v276"
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},
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{
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"name": "https://github.com/mastodon/mastodon/commit/18c61f286f1f5718a8f517940ba384866ffa3892",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/mastodon/mastodon/commit/18c61f286f1f5718a8f517940ba384866ffa3892"
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},
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{
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"name": "https://github.com/mastodon/mastodon/commit/467c933459c7d0e5513475b9e4888afaedfb1074",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/mastodon/mastodon/commit/467c933459c7d0e5513475b9e4888afaedfb1074"
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},
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{
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"name": "https://github.com/mastodon/mastodon/commit/930aa9fee26bf9eaefe27826fa1061288d83373b",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/mastodon/mastodon/commit/930aa9fee26bf9eaefe27826fa1061288d83373b"
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},
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{
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"name": "https://github.com/mastodon/mastodon/commit/da47a1bd3cd07935d7ca55a1f4f1a76f7f167e0d",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/mastodon/mastodon/commit/da47a1bd3cd07935d7ca55a1f4f1a76f7f167e0d"
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},
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{
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"name": "https://github.com/mastodon/mastodon/releases/tag/v4.4.21",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/mastodon/mastodon/releases/tag/v4.4.21"
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},
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{
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"name": "https://github.com/mastodon/mastodon/releases/tag/v4.5.14",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/mastodon/mastodon/releases/tag/v4.5.14"
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},
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{
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"name": "https://github.com/mastodon/mastodon/releases/tag/v4.6.4",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/mastodon/mastodon/releases/tag/v4.6.4"
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},
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{
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"name": "https://github.com/mastodon/mastodon/releases/tag/v4.7.0-beta.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/mastodon/mastodon/releases/tag/v4.7.0-beta.1"
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}
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],
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"affected": [
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{
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"vendor": "mastodon",
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"product": "mastodon",
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"versions": [
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{
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"version": "< 4.4.21",
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"status": "affected"
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},
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{
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"version": ">= 4.5.0-beta.1, < 4.5.14",
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"status": "affected"
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},
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{
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"version": ">= 4.6.0-beta.1, < 4.6.4",
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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": "2026-08-10T21:19:02.908Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "Mastodon is a free, open-source social network server based on ActivityPub. Prior to 4.4.21, 4.5.14, 4.6.4, and 4.7.0-beta.1, PrivateAddressCheck.private_address? in app/lib/private_address_check.rb normalized IPv4-mapped IPv6 addresses but did not recognize IPv4-compatible IPv6 addresses with IPAddr#ipv4_compat?. An attacker could supply an address in the omitted range to bypass the ALLOWED_PRIVATE_ADDRESSES protection and make Mastodon send HTTP requests to loopback interfaces, potentially accessing private resources and services. Exploitation requires a system that supports the obsolete IPv4-compatible IPv6 mechanism. This issue is fixed in versions 4.4.21, 4.5.14, 4.6.4, and 4.7.0-beta.1."
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}
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],
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"source": {
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"advisory": "GHSA-vwhj-3g83-v276",
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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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"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": "2026-08-13T15:13:13.639949Z",
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"id": "CVE-2026-72916",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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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": "2026-08-13T15:13:23.011Z"
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}
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}
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]
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}
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} |