Sourced from org.apache.logging.log4j:log4j-bom's releases.

2.25.1

This patch release addresses a dozen bugs in version 2.25.0, in particular:

• Resolves a concurrency issue in the new unified datetime formatter.
• Fixes build failures affecting Gradle users.
• Restores backward compatibility with Spring Boot’s common logging configuration.
• Improves handling of edge cases in GraalVM support.

Fixed

• Fix detection of the Disruptor major version in environments with non-standard thread context classloader. (#3706)
• Downgrade spotbugs-annotations to resolve Gradle build failures. (#3754)
• Fix incorrect version resolution of jspecify and error_prone_annotations dependencies in published POM files. (#3758, #3779)
• Restore compatibility with Spring Boot by allowing reconfiguration using the LoggerContext.start method. (#3770)
• Allow omission of the -Alog4j.graalvm.groupId and -Alog4j.graalvm.artifactId arguments when building Log4j plugins. (#3771)
• Broaden the OSGi manifest's Import-Package constraints to support Jakarta Servlet API up to version 6. (#3787)
• Enable the resource: protocol for configuration files by default when running on GraalVM. (#3790)
• Fix timestamp formatting concurrency issue, when log4j2.enabledThreadlocals is true. (#3792)
• Fix GraalVM reachability metadata generation for methods with annotated array type parameters, such as @Nullable String[]. (#3796)
• Resolve PropertiesConfiguration compatibility issues with GraalVM and address additional minor reflection-related problems. (#3800)

2.25.0

This minor release introduces bug fixes, behavior improvements, and complete support for GraalVM native image generation.

GraalVM Reachability Metadata

Log4j Core and all extension modules now include embedded
GraalVM reachability metadata,
enabling seamless generation of native images with GraalVM out of the box—no manual configuration required.
For more information, refer to our GraalVM guide.

[!NOTE]
When building third-party Log4j plugins, using the new GraalVmProcessor
introduced in version 2.25.0 will automatically generate the required reachability metadata for GraalVM native images.
However, the processor will fail the build if the required log4j.graalvm.groupId and log4j.graalvm.artifactId parameters are not provided.
For detailed instructions, see Registering plugins.

Exception Handling in Pattern Layout

Exception handling in Pattern Layout has undergone a significant rewrite.
This update resolves several bugs and ensures consistent behavior across all exception converters.
Key improvements include:

• Stack traces are now consistently prefixed with a newline instead of other whitespace.
• The default exception converter has changed from extended to plain, offering better performance.
• Support for the {ansi} option in exception converters has been removed.

Date & Time Formatting

Log4j has historically provided custom date and time formatters for performance, such as FixedDateFormat and FastDateFormat.

... (truncated)

• bda6336 Release changelog for version 2.25.1
• 4e1bbca Update the project.build.outputTimestamp property
• 63e8932 doc: Prepare release notes for version 2.25.1
• f26e041 fix: Proof-read changelog for version 2.25.1
• 76090f8 fix: Add resource: protocol to allowed URL schemes by default (#3795)
• 21a2300 fix: Add GraalVM reachability metadata for non-plugin class instantiations (#...
• 6e2cdeb fix: Disable sharing of formatted timestamps between threads (#3802)
• 9577db6 Update com.github.luben:zstd-jni to version 1.5.7-4 (#3799)
• 28b477c Update org.junit:junit-bom to version 5.13.2 (#3782)
• acbe411 Bump com.fasterxml.jackson:jackson-bom from 2.19.0 to 2.19.1 in /log4j-parent...
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