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Add documentation for third-party appenders and async HTTP appender specifically

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

Status: Open (in progress).

apache/logging-log4j2number 4062

#4062 In apache/logging-log4j2;

· mlangc opened on Mar 7, 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

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

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 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

waiting-for-maintainer

Status: Open.

#4105 In apache/logging-log4j2;

· raphaelNguyen opened on Apr 23, 2026