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CVE-2025-64508

Estado: AplazadaAlta (7.5)—

Bugsink is a self-hosted error tracking tool. In versions prior to 2.0.5, brotli "bombs" (highly compressed brotli streams, such as many zeros) can be sent to the server. Since the server will attempt to decompress these streams before applying various maximums, this can lead to exhaustion of the available memory and thus a Denial of Service. This can be done if the `DSN` is known, which it is in many common setups (JavaScript, Mobile Apps). The issue is patched in Bugsink version `2.0.5`. The vulnerability is similar to, but distinct from, another brotli-related problem in Bugsink, GHSA-rrx3-2x4g-mq2h/CVE-2025-64509.

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 AV:N/AC:L/PR:N/UI:N indica explotación remota sin privilegios (T1190). CWE-770 y descripción confirman exhaustión de memoria mediante brotli bombs, resultando en DoS (T1499.004).

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)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Bugsink — BugsinkAI

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2025-64508",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-64508",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-11-12T17:35:49.679099Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "bugsink",
          "product": "bugsink",
          "versions": [
            {
              "status": "affected",
              "version": "< 2.0.5"
            }
          ]
        }
      ]
    }
  ],
  "published": "2025-11-10T22:15:39.640",
  "references": [
    {
      "url": "https://github.com/bugsink/bugsink/commit/3f65544aab3ad5303d97009136640de97b0676a5",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/bugsink/bugsink/pull/266",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/bugsink/bugsink/security/advisories/GHSA-fc2v-vcwj-269v",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/google/brotli/commit/67d78bc41db1a0d03f2e763497748f2f69946627",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/google/brotli/issues/1327",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/google/brotli/issues/1375",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/google/brotli/pull/1234",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/google/brotli/releases/tag/v1.2.0",
      "source": "security-advisories@github.com"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-770"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Bugsink is a self-hosted error tracking tool. In versions prior to 2.0.5, brotli \"bombs\" (highly compressed brotli streams, such as many zeros) can be sent to the server. Since the server will attempt to decompress these streams before applying various maximums, this can lead to exhaustion of the available memory and thus a Denial of Service. This can be done if the `DSN` is known, which it is in many common setups (JavaScript, Mobile Apps). The issue is patched in Bugsink version `2.0.5`. The vulnerability is similar to, but distinct from, another brotli-related problem in Bugsink, GHSA-rrx3-2x4g-mq2h/CVE-2025-64509."
    },
    {
      "lang": "es",
      "value": "Bugsink es una herramienta de seguimiento de errores autohospedada. En versiones anteriores a la 2.0.5, se pueden enviar 'bombas' brotli (flujos brotli altamente comprimidos, como muchos ceros) al servidor. Dado que el servidor intentará descomprimir estos flujos antes de aplicar varios máximos, esto puede llevar al agotamiento de la memoria disponible y, por lo tanto, a una Denegación de Servicio. Esto se puede lograr si se conoce el 'DSN', lo cual ocurre en muchas configuraciones comunes (JavaScript, aplicaciones móviles). El problema está parcheado en la versión '2.0.5' de Bugsink. La vulnerabilidad es similar, pero distinta, a otro problema relacionado con brotli en Bugsink, GHSA-rrx3-2x4g-mq2h/CVE-2025-64509."
    }
  ],
  "lastModified": "2026-06-17T09:54:29.160",
  "sourceIdentifier": "security-advisories@github.com"
}