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CVE-2026-85077

Estado: Pendiente de análisisAlta (8.2)—

Sanic is an opensource python web server/framework. Prior to version 24.12.1, and in version 25.12.0, the HTTP/1.1 response pipeline in sanic/response/types.py serializes response header names and values without rejecting carriage-return or line-feed characters. Applications that place attacker-controlled data in response.headers, file(..., filename=...), or cookie path and domain attributes can therefore emit injected headers and may split responses. Depending on application and proxy behavior, this can enable session fixation through injected cookies, cache poisoning, or security-header corruption. This issue is fixed in versions 24.12.1 and 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).

🎯 Técnicas ATT&CK

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

Inyección HTTP en cabeceras sin validación (CWE-113) permite envenenamiento de caché, corrupción de seguridad y fijación de sesión mediante cookies manipuladas en aplicación web expuesta.

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

Application Isolation and SandboxingExploit ProtectionUpdate SoftwareApplication Developer GuidanceVulnerability ScanningThreat Intelligence Program

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)

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{
  "id": "CVE-2026-85077",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-85077",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-09-21T20:45:00.743376Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 8.2,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 4.2,
        "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": "2026-09-17T15:16:54.990",
  "references": [
    {
      "url": "https://github.com/sanic-org/sanic/commit/47349d689d65fa1907977ac100e867894aeafb22",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/sanic-org/sanic/commit/9a95bb1c187558949606b915f5162c15f2db781b",
      "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-m64h-22vf-48wm",
      "source": "security-advisories@github.com"
    }
  ],
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-113"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Sanic is an opensource python web server/framework. Prior to version 24.12.1, and in version 25.12.0, the HTTP/1.1 response pipeline in sanic/response/types.py serializes response header names and values without rejecting carriage-return or line-feed characters. Applications that place attacker-controlled data in response.headers, file(..., filename=...), or cookie path and domain attributes can therefore emit injected headers and may split responses. Depending on application and proxy behavior, this can enable session fixation through injected cookies, cache poisoning, or security-header corruption. This issue is fixed in versions 24.12.1 and 25.12.1."
    }
  ],
  "lastModified": "2026-09-24T21:22:19.873",
  "sourceIdentifier": "security-advisories@github.com"
}