FKIE_CVE-2025-66402

Vulnerability from fkie_nvd - Published: 2025-12-16 00:16 - Updated: 2026-01-06 19:42
Severity ?
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Summary
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.
References
security-advisories@github.comhttps://github.com/misskey-dev/misskey/commit/dc77d59f8712d3fe0b73cd4af2035133839cd57bPatch
security-advisories@github.comhttps://github.com/misskey-dev/misskey/security/advisories/GHSA-496g-mmpw-j9x3Exploit, Vendor Advisory
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/misskey-dev/misskey/security/advisories/GHSA-496g-mmpw-j9x3Exploit, Vendor Advisory
Impacted products
Vendor Product Version
misskey misskey *
misskey misskey 13.0.0
misskey misskey 13.0.0
misskey misskey 13.0.0
misskey misskey 13.0.0
misskey misskey 13.0.0
misskey misskey 13.0.0
misskey misskey 13.0.0
misskey misskey 13.0.0
misskey misskey 13.0.0
misskey misskey 13.0.0
misskey misskey 13.0.0
misskey misskey 13.0.0
misskey misskey 13.0.0
misskey misskey 13.0.0
misskey misskey 13.0.0
misskey misskey 13.0.0
misskey misskey 13.0.0
misskey misskey 13.0.0
misskey misskey 13.0.0
misskey misskey 13.0.0
misskey misskey 13.0.0
misskey misskey 13.0.0
misskey misskey 13.0.0
misskey misskey 13.0.0
misskey misskey 13.0.0
misskey misskey 13.0.0
misskey misskey 13.0.0
misskey misskey 13.0.0
misskey misskey 13.0.0
misskey misskey 13.0.0
misskey misskey 13.0.0
misskey misskey 13.0.0
misskey misskey 13.0.0
misskey misskey 13.0.0
misskey misskey 13.0.0
misskey misskey 13.0.0
To clipboard 

{
  "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"
    }
  ]
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.