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CVE-2026-34478 Apache Log4j Core: Log injection in Rfc5424Layout due to silent configuration incompatibility

🗓️ 10 Apr 2026 15:40:17Reported by apacheType 
cvelist
 cvelist🔗 www.cve.org👁 28 Views

Log4j Core Rfc5424Layout silent renames enable CRLF injection; upgrade to version 2.25.4.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
IBM Security Bulletins		Security Bulletin: Multiple Vulnerabilities in IBM Tivoli Netcool/OMNIbus_GUI
26 May 202614:03
–ibm
IBM Security Bulletins		Security Bulletin: IBM Maximo Scheduler Optimizer uses log4j-core-2.25.3.jar which is vulnerable to CVE-2026-34477, CVE-2026-34478, CVE-2026-34479, CVE-2026-34480
7 Jul 202613:50
–ibm
IBM Security Bulletins		Security Bulletin: Vulnerability in log4j/2.x affects IBM watsonx Assistant Cartridge and IBM watsonx Orchestrate with watsonx Assistant Cartridge.
22 Jun 202613:42
–ibm
IBM Security Bulletins		Security Bulletin: Multiple log4j related security vulnerabilities in IBM Guardium Key Lifecycle Manager
13 Jul 202609:24
–ibm
IBM Security Bulletins		Security Bulletin: IBM InfoSphere Information Server is affected by multiple vulnerabilities in Apache Log4j
24 Jun 202622:08
–ibm
IBM Security Bulletins		Security Bulletin: SPSS Collaboration and Deployment Services is affected by multiple vulnerabilities in Apache Log4j
1 Jul 202605:01
–ibm
IBM Security Bulletins		Security Bulletin: There is a vulnerability in log4j-core-2.25.3.jar used by IBM Maximo Manage application in IBM Maximo Application Suite (CVE-2026-34477, CVE-2026-34478, CVE-2026-34480)
29 May 202609:54
–ibm
IBM Security Bulletins		Security Bulletin: Multiple Vulnerabilities affect IBM Decision Optimization for Cloud Pak for Data.
19 Jun 202608:43
–ibm
IBM Security Bulletins		Security Bulletin: IBM® Db2® federated server is affected by multiple vulnerabilities in log4j v2.25.3.
23 Jun 202619:51
–ibm
IBM Security Bulletins		Security Bulletin: IBM Operational Decision Manager for May 2026 - Multiple CVEs addressed
9 Jul 202607:47
–ibm
Rows per page
[
  {
    "collectionURL": "https://repo.maven.apache.org/maven2",
    "cpes": [
      "cpe:2.3:a:apache:log4j:*:*:*:*:*:*:*:*"
    ],
    "defaultStatus": "unaffected",
    "packageName": "org.apache.logging.log4j:log4j-core",
    "packageURL": "pkg:maven/org.apache.logging.log4j/log4j-core",
    "product": "Apache Log4j Core",
    "vendor": "Apache Software Foundation",
    "versions": [
      {
        "lessThan": "2.25.4",
        "status": "affected",
        "version": "2.21.0",
        "versionType": "maven"
      },
      {
        "lessThanOrEqual": "3.0.0-beta3",
        "status": "affected",
        "version": "3.0.0-beta1",
        "versionType": "maven"
      }
    ]
  }
]

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10 Apr 2026 15:40Current
CVSS 46.9
EPSS0.00831
CWE-117CWE-684
log4j corerfc5424 layoutlog injectionnewline escapingtcp framingtls framing
28