CVE-2026-12481

{
  "id": "CVE-2026-12481",
  "sourceIdentifier": "[email protected]",
  "published": "2026-07-03T21:16:54.737",
  "lastModified": "2026-10-25T15:10:00.147",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability in keras-team/keras version 3.14.0 allows for arbitrary code execution due to improper handling of deserialization in the `Lambda` layer. Specifically, the `_raise_for_lambda_deserialization()` function fails to enforce the safe-mode guard when `safe_mode` is set to `None`, which is the default value when `from_config()` is called outside of a `SafeModeScope` context. This logic error conflates `None` (unset/default-deny) with `False` (explicitly disabled), bypassing the guard and allowing attacker-controlled `marshal` bytecode to be deserialized. Affected call sites include `keras.layers.deserialize(config)`, `keras.models.clone_model(model)`, and any direct invocation of `Lambda.from_config(config)` without an enclosing `SafeModeScope(True)`. This vulnerability can be exploited to achieve arbitrary OS-level code execution in the context of the server or user process."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad en keras-team/keras versión 3.14.0 permite la ejecución de código arbitrario debido a un manejo inadecuado de la deserialización en la capa ’Lambda’. Específicamente, la función ’_raise_for_lambda_deserialization’ no aplica la protección de modo seguro cuando ’safe_mode’ se establece en ’None’, que es el valor predeterminado cuando se llama a ’from_config()’ fuera de un contexto de ’SafeModeScope’. Este error lógico confunde ’None’ (no establecido/denegación predeterminada) con ’False’ (explícitamente deshabilitado), eludiendo la protección y permitiendo que el bytecode ’marshal’ controlado por el atacante sea deserializado. Los sitios de llamada afectados incluyen ’keras.layers.deserialize(config)’, ’keras.models.clone_model(model)’, y cualquier invocación directa de ’Lambda.from_config(config)’ sin un ’SafeModeScope(True)’ envolvente. Esta vulnerabilidad puede ser explotada para lograr la ejecución de código arbitrario a nivel del sistema operativo en el contexto del servidor o del proceso de usuario."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "keras-team",
          "product": "keras-team/keras",
          "versions": [
            {
              "version": "unspecified",
              "lessThanOrEqual": "latest",
              "versionType": "custom",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9
      }
    ],
    "cvssMetricV30": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.0",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "REQUIRED",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.9
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-07-06T15:15:34.297007Z",
          "id": "CVE-2026-12481",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-502"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:keras:keras:3.14.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "5AB5B43D-0D41-4CBB-97B5-F5FE10D56689"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://huntr.com/bounties/59ceaed1-c8a3-4135-8f94-169ade02823d",
      "source": "[email protected]",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://huntr.com/bounties/59ceaed1-c8a3-4135-8f94-169ade02823d",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ]
    }
  ]
}