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CVE-2026-49844 Apache Log4j API: Improper serialization of non-finite floating-point values in MapMessage.asJson()

🗓️ 10 Jul 2026 21:14:59Reported by apacheType 
cvelist
 cvelist
🔗 www.cve.org👁 7 Views

CVE-2026-49844: MapMessage.asJson emits nonfinite values as bare tokens, producing invalid JSON.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
Circl
CVE-2026-49844
11 Jul 202600:45
circl
CVE
CVE-2026-49844
10 Jul 202621:14
cve
EUVD
EUVD-2026-43102
11 Jul 202600:31
euvd
NVD
CVE-2026-49844
10 Jul 202622:16
nvd
Positive Technologies
PT-2026-57319
10 Jul 202600:00
ptsecurity
[
  {
    "collectionURL": "https://repo.maven.apache.org/maven2",
    "cpes": [
      "cpe:2.3:a:apache:log4j_api:*:*:*:*:*:*:*:*"
    ],
    "defaultStatus": "unaffected",
    "packageName": "org.apache.logging.log4j:log4j-api",
    "packageURL": "pkg:maven/org.apache.logging.log4j/log4j-api",
    "product": "Apache Log4j API",
    "vendor": "Apache Software Foundation",
    "versions": [
      {
        "lessThan": "2.25.5",
        "status": "affected",
        "version": "2.13.1",
        "versionType": "maven"
      },
      {
        "lessThan": "2.26.1",
        "status": "affected",
        "version": "2.26.0",
        "versionType": "maven"
      },
      {
        "lessThanOrEqual": "3.0.0-beta2",
        "status": "affected",
        "version": "3.0.0-alpha1",
        "versionType": "maven"
      }
    ]
  }
]

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