« Volver al listado

CVE-2026-82208

Estado: ModificadaAlta (7.5)—

With the wolfSSL backend, when CA caching is enabled and an `CURLOPT_SSL_CTX_FUNCTION` callback replaces the trust store, libcurl can silently reinstall the cached store after the callback returns. A certificate trusted by the cached store but rejected by the callback-selected store is then incorrectly accepted.

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.

AV:N/PR:N/UI:N indica red sin privilegios (T1190). wolfSSL con caché manipulado permite MITM aceptando certificados falsos (T1557) y exfiltración de datos (T1041).

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

Tecnologías afectadas (1)

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-82208",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-82208",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-09-08T18:46:24.528833Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "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:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "2499f714-1537-4658-8207-48ae4bb9eae9",
      "affectedData": [
        {
          "vendor": "curl",
          "product": "curl",
          "versions": [
            {
              "status": "affected",
              "version": "8.9.1",
              "lessThan": "8.14.2",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "8.15.0",
              "lessThan": "8.16.1",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "8.17.0",
              "lessThan": "8.20.1",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "8.21.0",
              "lessThan": "8.22.0",
              "versionType": "semver"
            }
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://github.com/curl/curl.git",
          "vendor": "curl",
          "product": "curl",
          "versions": [
            {
              "status": "affected",
              "version": "0f2876b2c33f6784a27b6f7345bd8cd95b46352a",
              "lessThan": "ed0338befd1d865a8ea1fbaa90013a096dedd07a",
              "versionType": "git"
            }
          ],
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "curl",
          "product": "curl",
          "versions": [
            {
              "status": "affected",
              "version": "8.21.0"
            },
            {
              "status": "affected",
              "version": "8.20.0"
            },
            {
              "status": "affected",
              "version": "8.19.0"
            },
            {
              "status": "affected",
              "version": "8.18.0"
            },
            {
              "status": "affected",
              "version": "8.17.0"
            },
            {
              "status": "affected",
              "version": "8.16.0"
            },
            {
              "status": "affected",
              "version": "8.15.0"
            },
            {
              "status": "affected",
              "version": "8.14.1"
            },
            {
              "status": "affected",
              "version": "8.14.0"
            },
            {
              "status": "affected",
              "version": "8.13.0"
            },
            {
              "status": "affected",
              "version": "8.12.1"
            },
            {
              "status": "affected",
              "version": "8.12.0"
            },
            {
              "status": "affected",
              "version": "8.11.1"
            },
            {
              "status": "affected",
              "version": "8.11.0"
            },
            {
              "status": "affected",
              "version": "8.10.1"
            },
            {
              "status": "affected",
              "version": "8.10.0"
            },
            {
              "status": "affected",
              "version": "8.9.1"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-09-06T18:17:22.733",
  "references": [
    {
      "url": "https://curl.se/docs/CVE-2026-82208.html",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "2499f714-1537-4658-8207-48ae4bb9eae9"
    },
    {
      "url": "https://curl.se/docs/CVE-2026-82208.json",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "2499f714-1537-4658-8207-48ae4bb9eae9"
    },
    {
      "url": "https://hackerone.com/reports/3973090",
      "tags": [
        "Exploit",
        "Mitigation",
        "Third Party Advisory"
      ],
      "source": "2499f714-1537-4658-8207-48ae4bb9eae9"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "2499f714-1537-4658-8207-48ae4bb9eae9",
      "description": [
        {
          "lang": "en",
          "value": "CWE-295"
        }
      ]
    },
    {
      "type": "Secondary",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "description": [
        {
          "lang": "en",
          "value": "CWE-295"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "With the wolfSSL backend, when CA caching is enabled and an\n`CURLOPT_SSL_CTX_FUNCTION` callback replaces the trust store, libcurl can\nsilently reinstall the cached store after the callback returns. A certificate\ntrusted by the cached store but rejected by the callback-selected store is\nthen incorrectly accepted."
    }
  ],
  "lastModified": "2026-09-15T07:16:31.050",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "AA8D9E44-54D2-45D2-89F6-3EC39E937F40",
              "versionEndExcluding": "8.22.0",
              "versionStartIncluding": "8.9.1"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "2499f714-1537-4658-8207-48ae4bb9eae9"
}