{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-66402", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2025-11-28T23:33:56.364Z", "datePublished": "2025-12-15T23:09:57.681Z", "dateUpdated": "2025-12-16T15:09:28.546Z"}, "containers": {"cna": {"title": "misskey.js's export data contains private post data", "problemTypes": [{"descriptions": [{"cweId": "CWE-862", "lang": "en", "description": "CWE-862: Missing Authorization", "type": "CWE"}]}], "metrics": [{"cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 7.1, "baseSeverity": "HIGH", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N", "version": "4.0"}}], "references": [{"name": "https://github.com/misskey-dev/misskey/security/advisories/GHSA-496g-mmpw-j9x3", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/misskey-dev/misskey/security/advisories/GHSA-496g-mmpw-j9x3"}, {"name": "https://github.com/misskey-dev/misskey/commit/dc77d59f8712d3fe0b73cd4af2035133839cd57b", "tags": ["x_refsource_MISC"], "url": "https://github.com/misskey-dev/misskey/commit/dc77d59f8712d3fe0b73cd4af2035133839cd57b"}], "affected": [{"vendor": "misskey-dev", "product": "misskey", "versions": [{"version": ">= 13.0.0-beta.16, < 2025.12.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2025-12-15T23:09:57.681Z"}, "descriptions": [{"lang": "en", "value": "Misskey is an open source, federated social media platform. Starting in version 13.0.0-beta.16 and prior to version 2025.12.0, an actor who does not have permission to view favorites or clips can can export the posts and view the contents. Version 2025.12.0 fixes the issue."}], "source": {"advisory": "GHSA-496g-mmpw-j9x3", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/misskey-dev/misskey/security/advisories/GHSA-496g-mmpw-j9x3", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2025-12-16T14:37:35.397337Z", "id": "CVE-2025-66402", "options": [{"Exploitation": "poc"}, {"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": "2025-12-16T15:09:28.546Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2025-66402", "role": "CISA Coordinator", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2025-12-16T14:37:35.397337Z"}}}], "references": [{"url": "https://github.com/misskey-dev/misskey/security/advisories/GHSA-496g-mmpw-j9x3", "tags": ["exploit"]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-12-16T14:37:38.179Z"}}], "cna": {"title": "misskey.js's export data contains private post data", "source": {"advisory": "GHSA-496g-mmpw-j9x3", "discovery": "UNKNOWN"}, "metrics": [{"cvssV4_0": {"version": "4.0", "baseScore": 7.1, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "HIGH"}}], "affected": [{"vendor": "misskey-dev", "product": "misskey", "versions": [{"status": "affected", "version": ">= 13.0.0-beta.16, < 2025.12.0"}]}], "references": [{"url": "https://github.com/misskey-dev/misskey/security/advisories/GHSA-496g-mmpw-j9x3", "name": "https://github.com/misskey-dev/misskey/security/advisories/GHSA-496g-mmpw-j9x3", "tags": ["x_refsource_CONFIRM"]}, {"url": "https://github.com/misskey-dev/misskey/commit/dc77d59f8712d3fe0b73cd4af2035133839cd57b", "name": "https://github.com/misskey-dev/misskey/commit/dc77d59f8712d3fe0b73cd4af2035133839cd57b", "tags": ["x_refsource_MISC"]}], "descriptions": [{"lang": "en", "value": "Misskey is an open source, federated social media platform. Starting in version 13.0.0-beta.16 and prior to version 2025.12.0, an actor who does not have permission to view favorites or clips can can export the posts and view the contents. Version 2025.12.0 fixes the issue."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-862", "description": "CWE-862: Missing Authorization"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2025-12-15T23:09:57.681Z"}}}, "cveMetadata": {"cveId": "CVE-2025-66402", "state": "PUBLISHED", "dateUpdated": "2025-12-16T15:09:28.546Z", "dateReserved": "2025-11-28T23:33:56.364Z", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "datePublished": "2025-12-15T23:09:57.681Z", "assignerShortName": "GitHub_M"}, "dataVersion": "5.2"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:misskey:misskey:*:*:*:*:*:*:*:*", "matchCriteriaId": "1BA8B906-8DD2-4D82-90A7-AD955FEF15FC", "versionEndExcluding": "2025.12.0", "versionStartIncluding": "13.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:misskey:misskey:13.0.0:-:*:*:*:*:*:*", "matchCriteriaId": "786B1922-6E2E-48B5-8AA6-16566BDC39EF", "vulnerable": true}, {"criteria": "cpe:2.3:a:misskey:misskey:13.0.0:beta16:*:*:*:*:*:*", "matchCriteriaId": "856F7093-6778-4449-A6B2-FADF0CC81BB8", "vulnerable": true}, {"criteria": "cpe:2.3:a:misskey:misskey:13.0.0:beta21:*:*:*:*:*:*", "matchCriteriaId": "4AEFFF0D-A3ED-41AF-B5F2-7E3E2CCB3E38", "vulnerable": true}, {"criteria": "cpe:2.3:a:misskey:misskey:13.0.0:beta22:*:*:*:*:*:*", "matchCriteriaId": "4615D7DB-9603-482D-8615-C09E8F41B204", "vulnerable": true}, {"criteria": "cpe:2.3:a:misskey:misskey:13.0.0:beta23:*:*:*:*:*:*", "matchCriteriaId": "D58C35C6-5F19-4588-B369-84275C2878F2", "vulnerable": true}, {"criteria": "cpe:2.3:a:misskey:misskey:13.0.0:beta24:*:*:*:*:*:*", "matchCriteriaId": "7A4672A2-20B7-403A-8430-A6D206D6B032", "vulnerable": true}, {"criteria": "cpe:2.3:a:misskey:misskey:13.0.0:beta25:*:*:*:*:*:*", "matchCriteriaId": "A1BAC1C3-CB0C-4C16-83C7-A18A4A7D3676", "vulnerable": true}, {"criteria": "cpe:2.3:a:misskey:misskey:13.0.0:beta26:*:*:*:*:*:*", "matchCriteriaId": "E1C4D34E-1B6B-48A7-8FA7-F0872C63C727", "vulnerable": true}, {"criteria": "cpe:2.3:a:misskey:misskey:13.0.0:beta27:*:*:*:*:*:*", "matchCriteriaId": "94E0E909-C42C-40B5-A4B5-D64049443903", "vulnerable": true}, {"criteria": "cpe:2.3:a:misskey:misskey:13.0.0:beta28:*:*:*:*:*:*", "matchCriteriaId": "CE544D6C-44DB-4E68-BFCE-DABC08EE3803", "vulnerable": true}, {"criteria": "cpe:2.3:a:misskey:misskey:13.0.0:beta29:*:*:*:*:*:*", "matchCriteriaId": "9F7A9629-9216-4F67-BF4E-69792256CFCA", "vulnerable": true}, {"criteria": "cpe:2.3:a:misskey:misskey:13.0.0:beta30:*:*:*:*:*:*", "matchCriteriaId": "5DB2EE81-D8F4-4A42-B6EA-B78B58782EDD", "vulnerable": true}, {"criteria": "cpe:2.3:a:misskey:misskey:13.0.0:beta31:*:*:*:*:*:*", "matchCriteriaId": "75364266-87FE-4DED-8DCC-B1B853C1EB31", "vulnerable": true}, {"criteria": "cpe:2.3:a:misskey:misskey:13.0.0:beta32:*:*:*:*:*:*", "matchCriteriaId": "0F76B069-5894-4652-8376-314CE5FC8D88", "vulnerable": true}, {"criteria": "cpe:2.3:a:misskey:misskey:13.0.0:beta33:*:*:*:*:*:*", "matchCriteriaId": "53072C15-3DC2-40D9-A382-93308C74E7CB", "vulnerable": true}, {"criteria": "cpe:2.3:a:misskey:misskey:13.0.0:beta34:*:*:*:*:*:*", "matchCriteriaId": "0EFC41E8-E58B-4845-8B04-9DBCE9A6BAF8", "vulnerable": true}, {"criteria": "cpe:2.3:a:misskey:misskey:13.0.0:beta35:*:*:*:*:*:*", "matchCriteriaId": "98307089-97A5-472B-9E5F-E2E189DD2EA6", "vulnerable": true}, {"criteria": "cpe:2.3:a:misskey:misskey:13.0.0:beta36:*:*:*:*:*:*", "matchCriteriaId": "439214AC-1F4D-423E-90B3-6118EC243D5E", "vulnerable": true}, {"criteria": "cpe:2.3:a:misskey:misskey:13.0.0:beta37:*:*:*:*:*:*", "matchCriteriaId": "94AFD144-D4D9-42A8-8D89-59B18ED3521A", "vulnerable": true}, {"criteria": "cpe:2.3:a:misskey:misskey:13.0.0:beta38:*:*:*:*:*:*", "matchCriteriaId": "7379A64A-E7AF-4F75-A30A-FB6FE3DA40B0", "vulnerable": true}, {"criteria": "cpe:2.3:a:misskey:misskey:13.0.0:beta39:*:*:*:*:*:*", "matchCriteriaId": "37709BF9-683C-41A2-8FBB-37FEA4272FCD", "vulnerable": true}, {"criteria": "cpe:2.3:a:misskey:misskey:13.0.0:beta40:*:*:*:*:*:*", "matchCriteriaId": "3CDB27CA-2511-4831-8319-FC48DCC61083", "vulnerable": true}, {"criteria": "cpe:2.3:a:misskey:misskey:13.0.0:beta41:*:*:*:*:*:*", "matchCriteriaId": "1C269183-FE50-414E-B6C9-62111A540BB2", "vulnerable": true}, {"criteria": "cpe:2.3:a:misskey:misskey:13.0.0:beta42:*:*:*:*:*:*", "matchCriteriaId": "8749073C-9460-4ACB-8513-B086824901BE", "vulnerable": true}, {"criteria": "cpe:2.3:a:misskey:misskey:13.0.0:beta43:*:*:*:*:*:*", "matchCriteriaId": "DC898D70-9A29-4660-A08C-6F4C72729651", "vulnerable": true}, {"criteria": "cpe:2.3:a:misskey:misskey:13.0.0:rc1:*:*:*:*:*:*", "matchCriteriaId": "03565A9E-D7C3-4116-B5D9-7C9A52173716", "vulnerable": true}, {"criteria": "cpe:2.3:a:misskey:misskey:13.0.0:rc10:*:*:*:*:*:*", "matchCriteriaId": "8C5BA7A5-51D0-46C4-BABA-22A1BE25F24B", "vulnerable": true}, {"criteria": "cpe:2.3:a:misskey:misskey:13.0.0:rc11:*:*:*:*:*:*", "matchCriteriaId": "C9F878A3-A229-46B1-8E1A-894FBE86A974", "vulnerable": true}, {"criteria": "cpe:2.3:a:misskey:misskey:13.0.0:rc2:*:*:*:*:*:*", "matchCriteriaId": "D6847DE7-005E-4D84-95FB-A240B2EC042B", "vulnerable": true}, {"criteria": "cpe:2.3:a:misskey:misskey:13.0.0:rc3:*:*:*:*:*:*", "matchCriteriaId": "5EDB186E-DC4E-4965-B72A-C7267DACB32F", "vulnerable": true}, {"criteria": "cpe:2.3:a:misskey:misskey:13.0.0:rc4:*:*:*:*:*:*", "matchCriteriaId": "D2DF0AC2-1BFD-43B8-8DDC-8727E5A44060", "vulnerable": true}, {"criteria": "cpe:2.3:a:misskey:misskey:13.0.0:rc5:*:*:*:*:*:*", "matchCriteriaId": "13568C76-3F2E-475C-B8B6-E7FBF1F7BCA6", "vulnerable": true}, {"criteria": "cpe:2.3:a:misskey:misskey:13.0.0:rc6:*:*:*:*:*:*", "matchCriteriaId": "9050C737-F150-4BA9-A503-069BC8D8B24F", "vulnerable": true}, {"criteria": "cpe:2.3:a:misskey:misskey:13.0.0:rc7:*:*:*:*:*:*", "matchCriteriaId": "E89A86DC-7164-4857-8FF7-3AD66CCA5C87", "vulnerable": true}, {"criteria": "cpe:2.3:a:misskey:misskey:13.0.0:rc8:*:*:*:*:*:*", "matchCriteriaId": "8E76C67E-94B5-42C6-8777-C83F1C51830C", "vulnerable": true}, {"criteria": "cpe:2.3:a:misskey:misskey:13.0.0:rc9:*:*:*:*:*:*", "matchCriteriaId": "8A6D3B97-247F-4ED7-942F-2962C0990A1D", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Misskey is an open source, federated social media platform. Starting in version 13.0.0-beta.16 and prior to version 2025.12.0, an actor who does not have permission to view favorites or clips can can export the posts and view the contents. Version 2025.12.0 fixes the issue."}], "id": "CVE-2025-66402", "lastModified": "2026-01-06T19:42:01.183", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2025-12-16T00:16:02.207", "references": [{"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/misskey-dev/misskey/commit/dc77d59f8712d3fe0b73cd4af2035133839cd57b"}, {"source": "security-advisories@github.com", "tags": ["Exploit", "Vendor Advisory"], "url": "https://github.com/misskey-dev/misskey/security/advisories/GHSA-496g-mmpw-j9x3"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit", "Vendor Advisory"], "url": "https://github.com/misskey-dev/misskey/security/advisories/GHSA-496g-mmpw-j9x3"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-862"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"created": "2025-12-16T17:11:24.910141+00:00", "updated": "2025-12-16T17:11:24.910166+00:00", "vendors": ["misskey", "misskey$PRODUCT$misskey"]}