CVE-2024-52590

Estado: AnalizadaAlta (8.8)—

Misskey is an open source, federated social media platform. In affected versions missing validation in `ApRequestService.signedGet` allows an attacker to create fake user profiles that appear to be from a different instance than the one where they actually exist. These profiles can be used to impersonate existing users from the target instance. Vulnerable Misskey instances will accept spoofed users as valid, allowing an attacker to impersonate users on another instance. Attackers have full control of the spoofed user and can post, renote, or otherwise interact like a real account. This issue has been addressed in version 2024.11.0-alpha.3. Users are advised to upgrade. There are no known workarounds for this vulnerability.

CVSS

Versión: 4.0
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:N/SC:L/SI:N/SA:L/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
Puntuación base: 8.8

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.35%
Percentil entre todas las CVEs puntuadas: 26
Fecha de la puntuación: 6/10/2026

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

ExplotaciónT1190 Exploit Public-Facing Applicationinitial access85 %
Impacto principalT1078 Valid Accountsstealth · persistence · privilege escalation · initial access90 %
Impacto secundarioT1565.003 Runtime Data Manipulationimpact75 %

Validación ausente en servicio remoto de red sin requerir privilegios (AV:N/PR:N) permite suplantación de usuarios federated y manipulación de contenido mediante perfiles falsos.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Privileged Account Management Network Segmentation Application Developer Guidance Active Directory Configuration Vulnerability Scanning User Training

Tecnologías afectadas (1)

Misskey — Misskey

CWE

CWE-20

Referencias

https://github.com/misskey-dev/misskey/security/advisories/GHSA-7vgr-p3vc-p4h2

JSON original (NVD)

Mostrar

{
  "id": "CVE-2024-52590",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2024-52590",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2024-12-19T16:59:12.947227Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.5,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 2.5,
        "exploitabilityScore": 3.9
      }
    ],
    "cvssMetricV40": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "Safety": "NOT_DEFINED",
          "version": "4.0",
          "Recovery": "NOT_DEFINED",
          "baseScore": 8.8,
          "Automatable": "NOT_DEFINED",
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:N/SC:L/SI:N/SA:L/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",
          "exploitMaturity": "NOT_DEFINED",
          "providerUrgency": "NOT_DEFINED",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "privilegesRequired": "NONE",
          "subIntegrityImpact": "NONE",
          "vulnIntegrityImpact": "HIGH",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "subAvailabilityImpact": "LOW",
          "vulnAvailabilityImpact": "NONE",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "subConfidentialityImpact": "LOW",
          "vulnConfidentialityImpact": "LOW",
          "confidentialityRequirement": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED"
        }
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "misskey-dev",
          "product": "misskey",
          "versions": [
            {
              "status": "affected",
              "version": ">= 2024.8.0-rc.3, < 2024.11.0-alpha.3"
            }
          ]
        }
      ]
    }
  ],
  "published": "2024-12-18T20:15:23.527",
  "references": [
    {
      "url": "https://github.com/misskey-dev/misskey/security/advisories/GHSA-7vgr-p3vc-p4h2",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Misskey is an open source, federated social media platform. In affected versions missing validation in `ApRequestService.signedGet` allows an attacker to create fake user profiles that appear to be from a different instance than the one where they actually exist. These profiles can be used to impersonate existing users from the target instance. Vulnerable Misskey instances will accept spoofed users as valid, allowing an attacker to impersonate users on another instance. Attackers have full control of the spoofed user and can post, renote, or otherwise interact like a real account. This issue has been addressed in version 2024.11.0-alpha.3. Users are advised to upgrade. There are no known workarounds for this vulnerability."
    },
    {
      "lang": "es",
      "value": "Misskey es una plataforma de redes sociales federada de código abierto. En las versiones afectadas, la falta de validación en `ApRequestService.signedGet` permite a un atacante crear perfiles de usuario falsos que parecen ser de una instancia diferente a la que realmente existen. Estos perfiles se pueden usar para hacerse pasar por usuarios existentes de la instancia de destino. Las instancias vulnerables de Misskey aceptarán a los usuarios falsificados como válidos, lo que permite a un atacante hacerse pasar por usuarios de otra instancia. Los atacantes tienen control total del usuario falsificado y pueden publicar, volver a anotar o interactuar de otro modo como si fuera una cuenta real. Este problema se ha solucionado en la versión 2024.11.0-alpha.3. Se recomienda a los usuarios que actualicen. No se conocen workarounds para esta vulnerabilidad."
    }
  ],
  "lastModified": "2026-06-17T08:07:30.427",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:misskey:misskey:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "959AB67B-25AE-4217-97E5-87FE8607A5A4",
              "versionEndExcluding": "2024.11.0",
              "versionStartExcluding": "2024.8.0"
            },
            {
              "criteria": "cpe:2.3:a:misskey:misskey:2024.8.0:rc3:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "0072A0F6-039D-4911-802D-C7664213CFCD"
            },
            {
              "criteria": "cpe:2.3:a:misskey:misskey:2024.8.0:rc4:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "8F884A09-253D-43E4-B48E-36821E40F093"
            },
            {
              "criteria": "cpe:2.3:a:misskey:misskey:2024.8.0:rc5:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "70CADF22-2DA8-4EA7-AF02-5F7C50DF753D"
            },
            {
              "criteria": "cpe:2.3:a:misskey:misskey:2024.11.0:alpha0:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "1BF4BE35-2292-4FD3-BE70-1ECB93C759D5"
            },
            {
              "criteria": "cpe:2.3:a:misskey:misskey:2024.11.0:alpha1:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "E74599B9-F76E-40E2-A2BC-297FBCD4114A"
            },
            {
              "criteria": "cpe:2.3:a:misskey:misskey:2024.11.0:alpha2:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "43BB14C6-8368-49E6-A1EF-6218C7ED998C"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "security-advisories@github.com"
}