206 lines
9.1 KiB
JSON
206 lines
9.1 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"cveMetadata": {
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"cveId": "CVE-2026-63177",
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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": "2026-07-15T22:13:00.720Z",
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"datePublished": "2026-08-11T20:30:57.901Z",
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"dateUpdated": "2026-10-02T20:27:08.611Z"
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},
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"cna": {
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"orgId": "7d14cffa-0d7d-4270-9dc0-52cabd5a23a6",
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"shortName": "icscert",
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"dateUpdated": "2026-10-02T20:27:08.611Z"
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},
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"title": "Malcolm Vulnerable to Authorization Bypass via URI Normalization Differential in Nginx Lua RBAC",
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"problemTypes": [
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{
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"descriptions": [
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{
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"lang": "en",
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"cweId": "CWE-863",
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"description": "CWE-863: Incorrect Authorization",
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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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"affected": [
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{
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"vendor": "cisagov",
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"product": "Malcolm",
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"versions": [
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{
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"status": "affected",
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"version": "< 26.07.0"
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},
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{
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"status": "unaffected",
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"version": "26.07.0"
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}
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],
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}
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],
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{
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"lang": "en",
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"value": "Malcolm is a network traffic analysis tool suite. Prior to version 26.07.0, role-based access control enforced in the Nginx OpenResty Lua layer evaluates the raw, unnormalized `ngx.var.request_uri`, while Nginx itself routes requests using the normalized path. An authenticated low-privilege user can prepend a traversal segment (for example `/x/../upload/...`) so that Nginx routes the request to a restricted backend while the Lua role check fails to match any rule and falls open, granting access it should deny. Version 26.07.0 fixes the issue.",
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"supportingMedia": [
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{
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"type": "text/html",
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"base64": false,
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"value": "<p>Malcolm is a network traffic analysis tool suite. Prior to version 26.07.0, role-based access control enforced in the Nginx OpenResty Lua layer evaluates the raw, unnormalized `ngx.var.request_uri`, while Nginx itself routes requests using the normalized path. An authenticated low-privilege user can prepend a traversal segment (for example `/x/../upload/...`) so that Nginx routes the request to a restricted backend while the Lua role check fails to match any rule and falls open, granting access it should deny. Version 26.07.0 fixes the issue.</p>"
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}
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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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"url": "https://github.com/cisagov/Malcolm/security/advisories/GHSA-m5fr-rv3h-xg2r",
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"name": "https://github.com/cisagov/Malcolm/security/advisories/GHSA-m5fr-rv3h-xg2r",
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"tags": [
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"x_refsource_CONFIRM"
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]
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},
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{
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"url": "https://github.com/cisagov/Malcolm/releases/tag/v26.07.0",
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"name": "https://github.com/cisagov/Malcolm/releases/tag/v26.07.0",
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"tags": [
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"x_refsource_MISC"
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]
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},
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{
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"url": "https://www.cisa.gov/news-events/ics-advisories/icsa-26-230-01"
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},
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{
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"url": "https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-230-01.json"
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}
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"metrics": [
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{
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"format": "CVSS",
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"scenarios": [
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"lang": "en",
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"value": "GENERAL"
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}
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],
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"cvssV3_1": {
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"version": "3.1",
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"attackVector": "NETWORK",
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"attackComplexity": "LOW",
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"privilegesRequired": "LOW",
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"userInteraction": "NONE",
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"scope": "UNCHANGED",
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"confidentialityImpact": "HIGH",
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"integrityImpact": "LOW",
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"availabilityImpact": "NONE",
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"baseSeverity": "HIGH",
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"baseScore": 7.1,
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N"
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}
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},
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{
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"format": "CVSS",
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"scenarios": [
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"lang": "en",
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"value": "GENERAL"
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],
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"cvssV4_0": {
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"attackVector": "NETWORK",
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"attackComplexity": "LOW",
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"attackRequirements": "NONE",
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"privilegesRequired": "LOW",
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"userInteraction": "NONE",
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"vulnConfidentialityImpact": "HIGH",
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"subConfidentialityImpact": "NONE",
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"vulnIntegrityImpact": "LOW",
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"subIntegrityImpact": "NONE",
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"vulnAvailabilityImpact": "NONE",
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"subAvailabilityImpact": "NONE",
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"exploitMaturity": "NOT_DEFINED",
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"Safety": "NOT_DEFINED",
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"Automatable": "NOT_DEFINED",
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"Recovery": "NOT_DEFINED",
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"valueDensity": "NOT_DEFINED",
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"vulnerabilityResponseEffort": "NOT_DEFINED",
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"providerUrgency": "NOT_DEFINED",
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"version": "4.0",
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"baseSeverity": "HIGH",
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"baseScore": 7.1,
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"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N"
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}
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}
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],
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"solutions": [
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{
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"lang": "en",
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"value": "Malcolm version 26.07.0 addresses these issues. For more information, see https://github.com/cisagov/Malcolm/pull/1043",
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"supportingMedia": [
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{
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"type": "text/html",
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"base64": false,
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"value": "Malcolm version 26.07.0 addresses these issues. For more information, see <a href=\"https://github.com/cisagov/Malcolm/pull/1043\">https://github.com/cisagov/Malcolm/pull/1043</a>"
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}
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]
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}
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],
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"credits": [
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{
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"lang": "en",
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"value": "pavanchow reported this vulnerability to CISA.",
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"type": "finder"
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}
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],
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"source": {
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"advisory": "GHSA-m5fr-rv3h-xg2r",
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"discovery": "EXTERNAL"
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},
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"x_generator": {
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"engine": "Vulnogram 1.0.5"
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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": "2026-08-12T22:07:37.481958Z",
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"id": "CVE-2026-63177",
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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": "2026-08-12T22:12:55.745Z"
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}
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}
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]
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},
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"dataVersion": "5.2"
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} |