FKIE_CVE-2025-46559

Vulnerability from fkie_nvd - Published: 2025-05-05 19:15 - Updated: 2025-09-03 18:29
Severity ?
5.4 (Medium) - CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:H/A:N
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Summary
Misskey is an open source, federated social media platform. Starting in version 12.31.0 and prior to version 2025.4.1, missing validation in `Mk:api` allows malicious AiScript code to access additional endpoints that it isn't designed to have access to. The missing validation allows malicious AiScript code to prefix a URL with `../` to step out of the `/api` directory, thereby being able to make requests to other endpoints, such as `/files`, `/url`, and `/proxy`. Version 2025.4.1 fixes the issue.
References
security-advisories@github.comhttps://github.com/misskey-dev/misskey/commit/583df3ec63e25a1fd34def0dac13405396b8b663Patch
security-advisories@github.comhttps://github.com/misskey-dev/misskey/security/advisories/GHSA-gmq6-738q-vjp2Exploit, Vendor Advisory
Impacted products
Vendor Product Version
misskey misskey *
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:misskey:misskey:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "AF4C47B2-D543-454C-98BC-902334F41586",
              "versionEndExcluding": "2025.4.1",
              "versionStartIncluding": "12.31.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Misskey is an open source, federated social media platform. Starting in version 12.31.0 and prior to version 2025.4.1, missing validation in `Mk:api` allows malicious AiScript code to access additional endpoints that it isn\u0027t designed to have access to. The missing validation allows malicious AiScript code to prefix a URL with `../` to step out of the `/api` directory, thereby being able to make requests to other endpoints, such as `/files`, `/url`, and `/proxy`. Version 2025.4.1 fixes the issue."
    },
    {
      "lang": "es",
      "value": "Misskey es una plataforma de redes sociales federada de c\u00f3digo abierto. A partir de la versi\u00f3n 12.31.0 y anteriores a la 2025.4.1, la falta de validaci\u00f3n en `Mk:api` permite que c\u00f3digo AiScript malicioso acceda a endpoints adicionales a los que no est\u00e1 dise\u00f1ado. Esta falta de validaci\u00f3n permite que el c\u00f3digo AiScript malicioso anteponga `../` a una URL para salir del directorio `/api`, lo que permite realizar solicitudes a otros endpoints, como `/files`, `/url` y `/proxy`. La versi\u00f3n 2025.4.1 soluciona el problema."
    }
  ],
  "id": "CVE-2025-46559",
  "lastModified": "2025-09-03T18:29:40.357",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.4,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 1.2,
        "impactScore": 4.2,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2025-05-05T19:15:56.910",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/misskey-dev/misskey/commit/583df3ec63e25a1fd34def0dac13405396b8b663"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Exploit",
        "Vendor Advisory"
      ],
      "url": "https://github.com/misskey-dev/misskey/security/advisories/GHSA-gmq6-738q-vjp2"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-22"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    }
  ]
}


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Sightings

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  • 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.
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  • 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.