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ReusableMessages not getting released when using entry/exit logging

bugIncorrect, unexpected, or unintended behavior of existing codeIncorrect, unexpected, or unintended behavior of existing code

Status: Open.

#1273 In apache/logging-log4j2;

· davemessink opened on Feb 9, 2023

Log4j's implementation of SLF4J Logger should not use no-op builders

bugIncorrect, unexpected, or unintended behavior of existing codeIncorrect, unexpected, or unintended behavior of existing code

slf4jAffects SLF4J integrationAffects SLF4J integration

Status: Open.

#1287 In apache/logging-log4j2;

· ppkarwasz opened on Feb 24, 2023

AsyncLogger does not compute location for some methods

asyncAffects asynchronous loggers or appendersAffects asynchronous loggers or appenders

bugIncorrect, unexpected, or unintended behavior of existing codeIncorrect, unexpected, or unintended behavior of existing code

Status: Open.

#1458 In apache/logging-log4j2;

· ppkarwasz opened on May 3, 2023

SizeBasedTriggeringPolicy counter not resetting after TimeBasedTriggeringPolicy rollover

appenders:RollingAffects log file rolling functionalityAffects log file rolling functionality

Status: Open.

#2297 In apache/logging-log4j2;

· ppkarwasz opened on Feb 18, 2024

LastModifiedTime of compressed file is not preserved

appenders:RollingAffects log file rolling functionalityAffects log file rolling functionality

enhancementAdditions or updates to featuresAdditions or updates to features

Status: Open.

#3965 In apache/logging-log4j2;

· mourya-satyam-888 opened on Oct 24, 2025

No error emitted when using a YAML configuration without additional dependency

bugIncorrect, unexpected, or unintended behavior of existing codeIncorrect, unexpected, or unintended behavior of existing code

configurationAffects the configuration system in a general wayAffects the configuration system in a general way

Status: Open.

#1501 In apache/logging-log4j2;

· designatevoid opened on Jun 2, 2023

ClassLoaderContextSelector should create a separate context per classloader

bugIncorrect, unexpected, or unintended behavior of existing codeIncorrect, unexpected, or unintended behavior of existing code

Status: Open.

#2314 In apache/logging-log4j2;

· ppkarwasz opened on Feb 22, 2024

Deprecate usage of TCCL in Loader/LoaderUtil

Status: Open.

#2850 In apache/logging-log4j2;

· ppkarwasz opened on Aug 16, 2024

Appender#stop is not idempotent

appendersAffects one or more Appender pluginsAffects one or more Appender plugins

bugIncorrect, unexpected, or unintended behavior of existing codeIncorrect, unexpected, or unintended behavior of existing code

Status: Open.

#1653 In apache/logging-log4j2;

· ppkarwasz opened on Aug 1, 2023

Log disruptor initialization errors

asyncAffects asynchronous loggers or appendersAffects asynchronous loggers or appenders

dependenciesRelated to third party dependency updates or migrationsRelated to third party dependency updates or migrations

Status: Open.

#2250 In apache/logging-log4j2;

· ppkarwasz opened on Jan 26, 2024

Fix handling of onMatch and onMismatch attributes in the properties configuration format

bugIncorrect, unexpected, or unintended behavior of existing codeIncorrect, unexpected, or unintended behavior of existing code

configurationAffects the configuration system in a general wayAffects the configuration system in a general way

good first issueIssues that are good for contributors looking to get startedIssues that are good for contributors looking to get started

Status: Open.

#2791 In apache/logging-log4j2;

· linghengqian opened on Aug 2, 2024

Fix RegexFilter pattern flags

bugIncorrect, unexpected, or unintended behavior of existing codeIncorrect, unexpected, or unintended behavior of existing code

configurationAffects the configuration system in a general wayAffects the configuration system in a general way

javaPull requests that update Java codePull requests that update Java code

Status: Open.

#3086 In apache/logging-log4j2;

· JWT007 opened on Oct 14, 2024

Add Support for Custom Headers in SMTP Appender

appendersAffects one or more Appender pluginsAffects one or more Appender plugins

enhancementAdditions or updates to featuresAdditions or updates to features

Status: Open.

Feature

#3704 In apache/logging-log4j2;

· ppkarwasz opened on Jun 1, 2025

ThrowableStackTraceRenderer HashMap key collision causes ArrayIndexOutOfBoundsException with custom exception equals() methods

bugIncorrect, unexpected, or unintended behavior of existing codeIncorrect, unexpected, or unintended behavior of existing code

layoutsAffects one or more Layout pluginsAffects one or more Layout plugins

Status: Open.

#3933 In apache/logging-log4j2;

· shinstev333 opened on Sep 18, 2025

LOG4J2-2073: Fix NPE in ConfigurationScheduler when scheduling cron tasks

bugIncorrect, unexpected, or unintended behavior of existing codeIncorrect, unexpected, or unintended behavior of existing code

configurationAffects the configuration system in a general wayAffects the configuration system in a general way

Status: Open (in progress).

apache/logging-log4j2number 3941

#3941 In apache/logging-log4j2;

· bhawnapannu2701 opened on Sep 25, 2025

Gradle: unexpected compiler warning with Log4j 2.25.3

bugIncorrect, unexpected, or unintended behavior of existing codeIncorrect, unexpected, or unintended behavior of existing code

buildAffects the build system or other automationAffects the build system or other automation

Status: Open.

Bug

#4007 In apache/logging-log4j2;

· ppkarwasz opened on Dec 18, 2025

Proactively deferring compression can reduce disk I/O pressure.

enhancementAdditions or updates to featuresAdditions or updates to features

Status: Open.

#4012 In apache/logging-log4j2;

· OpenZYK opened on Dec 24, 2025

Uniformise %ex pattern and exception JTL resolver

bugIncorrect, unexpected, or unintended behavior of existing codeIncorrect, unexpected, or unintended behavior of existing code

layoutsAffects one or more Layout pluginsAffects one or more Layout plugins

Status: Open.

#3623 In apache/logging-log4j2;

· ppkarwasz opened on Apr 17, 2025

Consider replacing FileOutputStream with Files.newOutputStream

appendersAffects one or more Appender pluginsAffects one or more Appender plugins

enhancementAdditions or updates to featuresAdditions or updates to features

runtimeSpecific to the runtime environmentSpecific to the runtime environment

Status: Open.

#2117 In apache/logging-log4j2;

· ppkarwasz opened on Dec 21, 2023

SslConfig is null when trying to capture logs using Syslog with TLS

bugIncorrect, unexpected, or unintended behavior of existing codeIncorrect, unexpected, or unintended behavior of existing code

configurationAffects the configuration system in a general wayAffects the configuration system in a general way

layoutsAffects one or more Layout pluginsAffects one or more Layout plugins

Status: Open.

#4026 In apache/logging-log4j2;

· Pariksit-Dogra opened on Jan 20, 2026

Harden ObjectArrayMessage deserialization with SerializationUtil.assertFiltered

enhancementAdditions or updates to featuresAdditions or updates to features

Status: Open (in progress).

apache/logging-log4j2number 4098

#4098 In apache/logging-log4j2;

· SunWeb3Sec opened on Apr 19, 2026

Missing ANSI Italic Style and Rendering Error in Underline Style

bugIncorrect, unexpected, or unintended behavior of existing codeIncorrect, unexpected, or unintended behavior of existing code

layoutsAffects one or more Layout pluginsAffects one or more Layout plugins

Status: Open.

#4105 In apache/logging-log4j2;

· raphaelNguyen opened on Apr 23, 2026

Document StructuredDataMessage argument constraints

documentationPull requests or issues that affect documentationPull requests or issues that affect documentation

Status: Open.

#4051 In apache/logging-log4j2;

· ppkarwasz opened on Feb 25, 2026

Missing servlet context in web lookup when using composite configuration

bugIncorrect, unexpected, or unintended behavior of existing codeIncorrect, unexpected, or unintended behavior of existing code

lookupsIssue related to a lookupIssue related to a lookup

Status: Open.

#2351 In apache/logging-log4j2;

· apimentasoto opened on Mar 5, 2024