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          "url": "https://lists.apache.org/thread/n34zdv00gbkdbzt2rx9rf5mqz6lhopcv"
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      ],
      "source": {
        "discovery": "EXTERNAL"
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      "timeline": [
        {
          "lang": "en",
          "time": "2026-02-16T18:14:00.000Z",
          "value": "Vulnerability reported by Ap4sh and ethicxz"
        },
        {
          "lang": "en",
          "time": "2026-03-10T20:42:00.000Z",
          "value": "Candidate patch internally shared by Piotr P. Karwasz"
        },
        {
          "lang": "en",
          "time": "2026-03-24T23:06:00.000Z",
          "value": "Fix shared publicly by Piotr P. Karwasz as pull request #4080"
        },
        {
          "lang": "en",
          "time": "2026-03-25T09:54:00.000Z",
          "value": "Fix verified by the reporter"
        },
        {
          "lang": "en",
          "time": "2026-03-28T11:19:00.000Z",
          "value": "Log4j 2.25.4 released"
        }
      ],
      "title": "Apache Log4j JSON Template Layout: Improper serialization of non-finite floating-point values in JsonTemplateLayout",
      "x_generator": {
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  "cveMetadata": {
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    "assignerShortName": "apache",
    "cveId": "CVE-2026-34481",
    "datePublished": "2026-04-10T15:43:00.100Z",
    "dateReserved": "2026-03-28T19:23:37.127Z",
    "dateUpdated": "2026-04-10T17:41:38.229Z",
    "state": "PUBLISHED"
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