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CVE-2024-37903

Estado: AnalizadaAlta (8.2)—

Mastodon is a self-hosted, federated microblogging platform. Starting in version 2.6.0 and prior to versions 4.1.18 and 4.2.10, by crafting specific activities, an attacker can extend the audience of a post they do not own to other Mastodon users on a target server, thus gaining access to the contents of a post not intended for them. Versions 4.1.18 and 4.2.10 contain a patch for this issue.

CVSS

Probabilidad de explotación (EPSS)

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).

Tecnologías afectadas (1)

Joinmastodon — Mastodon

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2024-37903",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2024-37903",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2024-07-31T19:04:59.386414Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 8.2,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 4.2,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "mastodon",
          "product": "mastodon",
          "versions": [
            {
              "status": "affected",
              "version": ">= 2.6.0, < 4.1.18"
            },
            {
              "status": "affected",
              "version": ">= 4.2.0, < 4.2.10"
            }
          ]
        }
      ]
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "affectedData": [
        {
          "cpes": [
            "cpe:2.3:a:joinmastodon:mastodon:2.6.0:*:*:*:*:*:*:*"
          ],
          "vendor": "joinmastodon",
          "product": "mastodon",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.0",
              "lessThan": "4.1.18",
              "versionType": "custom"
            }
          ],
          "defaultStatus": "unknown"
        },
        {
          "cpes": [
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          "vendor": "joinmastodon",
          "product": "mastodon",
          "versions": [
            {
              "status": "affected",
              "version": "4.2.0",
              "lessThan": "4.2.10",
              "versionType": "custom"
            }
          ],
          "defaultStatus": "unknown"
        }
      ]
    }
  ],
  "published": "2024-07-05T18:15:32.093",
  "references": [
    {
      "url": "https://github.com/mastodon/mastodon/commit/a1c7aae28aecf06659c5b18cfa131b37cd1512a3",
      "tags": [
        "Patch"
      ],
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/mastodon/mastodon/commit/d4bf22b632ea8b1174375c4966a6768ab66393b6",
      "tags": [
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      ],
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/mastodon/mastodon/releases/tag/v4.1.18",
      "tags": [
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      "tags": [
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    },
    {
      "url": "https://github.com/mastodon/mastodon/security/advisories/GHSA-xjvf-fm67-4qc3",
      "tags": [
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      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/mastodon/mastodon/commit/a1c7aae28aecf06659c5b18cfa131b37cd1512a3",
      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://github.com/mastodon/mastodon/commit/d4bf22b632ea8b1174375c4966a6768ab66393b6",
      "tags": [
        "Patch"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://github.com/mastodon/mastodon/releases/tag/v4.1.18",
      "tags": [
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      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://github.com/mastodon/mastodon/releases/tag/v4.2.10",
      "tags": [
        "Release Notes"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://github.com/mastodon/mastodon/security/advisories/GHSA-xjvf-fm67-4qc3",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-862"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Mastodon is a self-hosted, federated microblogging platform. Starting in version 2.6.0 and prior to versions 4.1.18 and 4.2.10, by crafting specific activities, an attacker can extend the audience of a post they do not own to other Mastodon users on a target server, thus gaining access to the contents of a post not intended for them. Versions 4.1.18 and 4.2.10 contain a patch for this issue."
    },
    {
      "lang": "es",
      "value": " Mastodon es una plataforma de microblogging federada y autohospedada. A partir de la versión 2.6.0 y antes de las versiones 4.1.18 y 4.2.10, al crear actividades específicas, un atacante puede ampliar la audiencia de una publicación que no es de su propiedad a otros usuarios de Mastodon en un servidor de destino, obteniendo así acceso al contenido de una publicación no destinada a ellos. Las versiones 4.1.18 y 4.2.10 contienen un parche para este problema."
    }
  ],
  "lastModified": "2026-06-17T07:39:01.237",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:joinmastodon:mastodon:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "789AD464-8653-4C01-B623-144CC9968130",
              "versionEndExcluding": "4.1.18",
              "versionStartIncluding": "2.6.0"
            },
            {
              "criteria": "cpe:2.3:a:joinmastodon:mastodon:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "17D6FFBE-0FB9-4AFB-B93A-F8B063B52A1A",
              "versionEndExcluding": "4.2.10",
              "versionStartIncluding": "4.2.0"
            }
          ],
          "operator": "OR"
        }
      ]
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  ],
  "sourceIdentifier": "security-advisories@github.com"
}