PT-2026-57319

Name of the Vulnerable Software and Affected Versions Apache Log4j API versions 2.13.1 through 2.25.4 Apache Log4j API version 2.26.0 Description Improper encoding of non-finite IEEE 754 floating-point values NaN, Infinity, or -Infinity during MapMessage JSON serialization produces output that is...

org.apache.logging.log4j/log4j-core: Apache Log4j Core: Invalid XML output causes denial of service in logging

A flaw was found in Apache Log4j Core. The XmlLayout component, responsible for formatting log messages into XML, does not properly remove or replace characters that are not allowed in XML 1.0. When log messages or diagnostic information contain these forbidden characters, the resulting XML outpu...

org.apache.logging.log4j/log4j-core: Apache Log4j Core: Log injection via CRLF sequences due to configuration attribute renames

A flaw was found in Apache Log4j Core. This vulnerability allows for log injection through the use of Carriage Return Line Feed CRLF sequences. This occurs because security-related configuration attributes were silently renamed, impacting users who directly configure Rfc5424Layout with stream-bas...

Important: log4j-cve-2021-44228-hotpatch

Issue Overview: No CVE associated with this advisory Affected Packages: log4j-cve-2021-44228-hotpatch Note: This advisory is applicable to Amazon Linux 2 AL2 Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories. Issue Correction: Run yum update...

Amazon Linux 2 : log4j-cve-2021-44228-hotpatch, --advisory ALAS2-2026-3784 (ALAS-2026-3784)

The version of log4j-cve-2021-44228-hotpatch installed on the remote host is prior to 1.3-9. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2026-3784 advisory. Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported...

Security Bulletin: Vulnerabilities in log4j, IBM WebSphere Profile and IBM Semeru Java (CVE-2026-34477, CVE-2026-34480, CVE-2026-22016, CVE-2026-22021, CVE-2026-22013, CVE-2026-22018, CVE-2026-34268) affect PowerVM Novalink

Summary The log4j, IBM WebSphere Liberty Profile and IBM Semeru Java are used by PowerVM Novalink. PowerVM Novalink has addressed the applicable CVEs. Vulnerability Details CVEID:CVE-2026-3621 DESCRIPTION: IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.4 IBM WebSphere...

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

Summary 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. This bulletin contains information regarding the vulnerability and its fixture. Vulnerability Details CVEID:CVE-2026-34477 DESCRIPTION: The fix...

Security Bulletin: IBM Maximo Scheduler Optimizer uses log4j-core-2.25.3.jar which is vulnerable to CVE-2026-34477, CVE-2026-34478, CVE-2026-34480

Summary IBM Maximo Scheduler Optimizer uses log4j-core-2.25.3.jar which is vulnerable to CVE-2026-34477, CVE-2026-34478, CVE-2026-34480. This bulletin contains information regarding the vulnerability and its fixture. Vulnerability Details CVEID:CVE-2026-34477 DESCRIPTION: The fix for CVE-2025-681...

Security Bulletin: IBM Maximo Scheduler Optimizer uses log4j-core-2.25.3.jar which is vulnerable to CVE-2026-34477, CVE-2026-34478

Summary IBM Maximo Scheduler Optimizer uses log4j-core-2.25.3.jar which is vulnerable to CVE-2026-34477, CVE-2026-34478. This bulletin contains information regarding the vulnerability and its fixture. Vulnerability Details CVEID:CVE-2026-34477 DESCRIPTION: The fix for CVE-2025-68161...

Spring Office Hours Podcast: S5E17 - Spring Boot 4.1 with Phil Webb

Join Dan Vega and DaShaun Carter for the latest updates from the Spring Ecosystem. In this episode, Dan and DaShaun are joined by Spring Boot co-creator and project lead Phil Webb to dig into what's new in Spring Boot 4.1. They walk through the headline features landing in this release, including...

org.apache.logging.log4j/log4j-core: Apache Log4j Core: Invalid XML output causes denial of service in logging

A flaw was found in Apache Log4j Core. The XmlLayout component, responsible for formatting log messages into XML, does not properly remove or replace characters that are not allowed in XML 1.0. When log messages or diagnostic information contain these forbidden characters, the resulting XML outpu...

Security Bulletin: SPSS Collaboration and Deployment Services is affected by multiple vulnerabilities in Apache Log4j

Summary SPSS Collaboration and Deployment Services is affected by multiple vulnerabilities in Apache Log4j. This has been addressed in the remediation section. Vulnerability Details CVEID:CVE-2026-34479 DESCRIPTION: The Log4j1XmlLayout from the Apache Log4j 1-to-Log4j 2 bridge fails to escape...

Security Bulletin: Due to use of log4j-core, IBM webMethods BPM is vulnerable to Improper Validation of Certificate with Host Mismatch and Improper Output Neutralization for Logs

Summary IBM webMethods BPM tool is dependant on log4j-core which is affected by known vulnerabilities - CVE-2026-34477 and CVE-2026-34478 Vulnerability Details CVEID:CVE-2026-34477 DESCRIPTION: The fix for CVE-2025-68161 https://logging.apache.org/security.htmlCVE-2025-68161 was incomplete: it...

Security Bulletin: IBM Watson Discovery Cartridge affected by vulnerabilities in log4j-core-2.25.2.jar

Summary IBM Watson Discovery Cartridge affected by vulnerabilities in log4j-core-2.25.2.jar Vulnerability Details CVEID:CVE-2025-68161 DESCRIPTION: The Socket Appender in Apache Log4j Core versions 2.0-beta9 through 2.25.2 does not perform TLS hostname verification of the peer certificate, even...

Security Bulletin: Log4j Core TLS hostname verification bypass via verifyHostName XML attribute allows man-in-the-middle attacks on SMTP/Socket/Syslog appenders.

Summary Vulnerabilities have been identified in Apache Log4j Core affecting TLS security and log integrity. The first leaves TLS hostname verification silently ineffective through version 2.25.3, exposing SMTP, Socket, and Syslog appenders to man-in-the-middle attacks. The second introduces CRLF...

Security Bulletin: Log4j Core TLS hostname verification bypass via verifyHostName XML attribute allows man-in-the-middle attacks on SMTP/Socket/Syslog appenders.

Summary Vulnerabilities have been identified in Apache Log4j Core versions up to 2.25.3 affecting TLS security, log integrity, and XML output handling. The first exposes SMTP, Socket, and Syslog appenders to man-in-the-middle attacks due to silently ineffective hostname verification; the second...

Security Bulletin: Log4j Core TLS hostname verification bypass via verifyHostName XML attribute allows man-in-the-middle attacks on SMTP/Socket/Syslog appenders.

Summary Vulnerabilities have been identified in Apache Log4j Core versions up to 2.25.3 and the Log4j 1-to-2 bridge, covering TLS hostname verification bypass, CRLF log injection, and malformed XML output due to improper character escaping. Collectively, these issues expose applications to...

K000161888: Apache log4j vulnerability CVE-2026-34481

Security Advisory Description Apache Log4j's JsonTemplateLayout https:// logging. apache. org/log4j/2. x/manual/json-template-layout. html , in versions up to and including 2.25.3, produces invalid JSON output when log events contain non-finite floating-point values NaN, Infinity, or -Infinity,...

Security Bulletin: IBM® Db2® federated server is affected by multiple vulnerabilities in log4j v2.25.3.

Summary IBM® Db2® federated server is affected by multiple vulnerabilities in log4j v2.25.3. Vulnerability Details CVEID:CVE-2026-34480 DESCRIPTION: Apache Log4j Core's XmlLayout https://logging.apache.org/log4j/2.x/manual/layouts.htmlXmlLayout , in versions up to and including 2.25.3, fails to...

Security Bulletin: IBM® Db2® federated server is affected by a vulnerability in log4j-core-2.17.2 (CVE-2025-68161)

Summary IBM® Db2® federated server is affected by a vulnerability in log4j-core-2.17.2 CVE-2025-68161 Vulnerability Details CVEID:CVE-2025-68161 DESCRIPTION: The Socket Appender in Apache Log4j Core versions 2.0-beta9 through 2.25.2 does not perform TLS hostname verification of the peer...