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CVE-2024-52815

Estado: AnalizadaAlta (8.7)—

Synapse is an open-source Matrix homeserver. Synapse versions before 1.120.1 fail to properly validate invites received over federation. This vulnerability allows a malicious server to send a specially crafted invite that disrupts the invited user's /sync functionality. Synapse 1.120.1 rejects such invalid invites received over federation and restores the ability to sync for affected users.

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).

🎯 Técnicas ATT&CK

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

Vector CVSS de red sin autenticación (AV:N/PR:N/UI:N) con impacto de disponibilidad (VA:H) en sincronización de usuarios. Validación insuficiente de invitaciones federadas permite DoS.

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

Filter Network TrafficVulnerability ScanningPrivileged Account ManagementNetwork SegmentationLimit Access to Resource Over NetworkApplication Isolation and Sandboxing

Tecnologías afectadas (1)

Matrix — Synapse

CWE

Referencias

JSON original (NVD)

Mostrar
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  "id": "CVE-2024-52815",
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          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
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  "published": "2024-12-03T17:15:12.267",
  "references": [
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      "url": "https://github.com/element-hq/synapse/security/advisories/GHSA-f3r3-h2mq-hx2h",
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      "lang": "en",
      "value": "Synapse is an open-source Matrix homeserver. Synapse versions before 1.120.1 fail to properly validate invites received over federation. This vulnerability allows a malicious server to send a specially crafted invite that disrupts the invited user's /sync functionality. Synapse 1.120.1 rejects such invalid invites received over federation and restores the ability to sync for affected users."
    },
    {
      "lang": "es",
      "value": "Synapse es un servidor doméstico Matrix de código abierto. Las versiones de Synapse anteriores a la 1.120.1 no pueden validar correctamente las invitaciones recibidas a través de la federación. Esta vulnerabilidad permite que un servidor malintencionado envíe una invitación especialmente manipulada que interrumpe la funcionalidad /sync del usuario invitado. Synapse 1.120.1 rechaza dichas invitaciones no válidas recibidas a través de la federación y restaura la capacidad de sincronización de los usuarios afectados."
    }
  ],
  "lastModified": "2026-06-17T08:07:40.657",
  "configurations": [
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