{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:keras:keras:3.14.0:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "3.14.0"
              },
              {
                "last_affected": "3.14.0"
              }
            ],
            "source": "CPE_STRING"
          },
          "events": [
            {
              "introduced": "050671c8cfa58cd288bcc1f4ad21e83991bfdf9f"
            },
            {
              "last_affected": "050671c8cfa58cd288bcc1f4ad21e83991bfdf9f"
            }
          ],
          "repo": "https://github.com/keras-team/keras",
          "type": "GIT"
        }
      ],
      "versions": [
        "3.14.0"
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "@huntr_ai",
    "cwe_ids": [
      "CWE-502"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/12xxx/CVE-2026-12481.json"
  },
  "details": "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.",
  "id": "CVE-2026-12481",
  "modified": "2026-08-12T03:51:25.298156029Z",
  "published": "2026-07-03T20:36:05.003Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://huntr.com/bounties/59ceaed1-c8a3-4135-8f94-169ade02823d"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/12xxx/CVE-2026-12481.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-12481"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Deserialization of Untrusted Data in keras-team/keras"
}