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CVE-2026-85078

Estado: Pendiente de análisisMedia (6.5)—

Sanic is an opensource python web server/framework. In version 25.12.0, Sanic's core HTTP/1.1 chunked-body handling does not fully consume the trailer-part after the terminating zero chunk before reusing the keep-alive connection buffer. A remote unauthenticated client can place attacker-controlled bytes in that trailer region, causing Sanic to parse and route them as a hidden second request after the outer request. This breaks HTTP request-boundary integrity and can provide a request-smuggling primitive when Sanic is deployed behind intermediaries. This issue is fixed in version 25.12.1.

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)

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

Sanic — SanicAI

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-85078",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-85078",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-09-17T17:06:16.358452Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.5,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "LOW",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 2.5,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "sanic-org",
          "product": "sanic",
          "versions": [
            {
              "status": "affected",
              "version": "< 24.12.1"
            },
            {
              "status": "affected",
              "version": ">= 25.12.0, < 25.12.1"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-09-17T15:16:55.153",
  "references": [
    {
      "url": "https://github.com/sanic-org/sanic/commit/47349d689d65fa1907977ac100e867894aeafb22",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/sanic-org/sanic/commit/69a10d3b06babaa9e5f6d1af577364e9e53b6dea",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/sanic-org/sanic/commit/a332796506c7c588b6930b02a8886e43eb8ea8d6",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/sanic-org/sanic/pull/3164",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/sanic-org/sanic/pull/3165",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/sanic-org/sanic/releases/tag/v24.12.1",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/sanic-org/sanic/releases/tag/v25.12.1",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/sanic-org/sanic/security/advisories/GHSA-wmj6-g64g-j7q5",
      "source": "security-advisories@github.com"
    }
  ],
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-444"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Sanic is an opensource python web server/framework. In version 25.12.0, Sanic's core HTTP/1.1 chunked-body handling does not fully consume the trailer-part after the terminating zero chunk before reusing the keep-alive connection buffer. A remote unauthenticated client can place attacker-controlled bytes in that trailer region, causing Sanic to parse and route them as a hidden second request after the outer request. This breaks HTTP request-boundary integrity and can provide a request-smuggling primitive when Sanic is deployed behind intermediaries. This issue is fixed in version 25.12.1."
    }
  ],
  "lastModified": "2026-09-30T17:31:44.573",
  "sourceIdentifier": "security-advisories@github.com"
}