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CVE-2025-10148

Estado: ModificadaMedia (5.3)—

curl's WebSocket code did not update the 32-bit mask pattern for each new outgoing frame as the specification says. Instead it used a fixed mask that persisted and was used throughout the entire connection.

A predictable mask pattern allows for a malicious server to induce traffic between the two communicating parties that could be interpreted by an involved proxy (configured or transparent) as genuine, real, HTTP traffic with content and thereby poison its cache. That cached poisoned content could then be served to all users of that proxy.

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)

Haxx — Curl

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2025-10148",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-10148",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-09-12T17:16:46.486840Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "cvssData": {
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          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 1.4,
        "exploitabilityScore": 3.9
      }
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  },
  "affected": [
    {
      "source": "2499f714-1537-4658-8207-48ae4bb9eae9",
      "affectedData": [
        {
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          "product": "curl",
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              "version": "8.11.0",
              "lessThan": "8.14.2",
              "versionType": "semver"
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  "published": "2025-09-12T06:15:40.020",
  "references": [
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      "tags": [
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      "url": "https://hackerone.com/reports/3330839",
      "tags": [
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      "tags": [
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        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "2499f714-1537-4658-8207-48ae4bb9eae9",
      "description": [
        {
          "lang": "en",
          "value": "CWE-340"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "curl's WebSocket code did not update the 32-bit mask pattern for each new\noutgoing frame as the specification says. Instead it used a fixed mask that\npersisted and was used throughout the entire connection.\n\nA predictable mask pattern allows for a malicious server to induce traffic\nbetween the two communicating parties that could be interpreted by an involved\nproxy (configured or transparent) as genuine, real, HTTP traffic with content\nand thereby poison its cache. That cached poisoned content could then be\nserved to all users of that proxy."
    }
  ],
  "lastModified": "2026-09-15T07:16:21.967",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "A2D88104-00EB-4B8B-88D4-9FCCEF41FA6B",
              "versionEndExcluding": "8.16.0",
              "versionStartIncluding": "8.11.0"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "2499f714-1537-4658-8207-48ae4bb9eae9"
}