Sourced from ch.qos.logback:logback-classic's releases.

Logback 1.5.22

2025-12-11 Release of logback version 1.5.22

• In order to prevent involuntary information leakage, Logback will no longer output the value of a substituted variable, if the variable name contains any of the case-insensitive strings "password", "secret" or "confidential". This problem was reported by Chintan Rohila in issues/986.

• Logback now takes the overridden toString() method of Throwable subclasses into account when printing stack traces. This issue was reported in LOGBACK-543 by Alvin Chee, with a fix provided in PR 404 by Brett Kail.

• Instead of limit-counting guard, Logback now uses a tumbling-window guard to rate limit internal error messages.

• A bit-wise identical binary of this version can be reproduced by building from source code at commit 572379aabd2f672b49593e4020696c624541e5b0 associated with the tag v_1.5.22. Release built using Java "21" 2023-10-17 LTS build 21.0.1.+12-LTS-29 under Linux Debian 11.6.

Logback 1.5.21

2025-11-10 Release of logback version 1.5.21

• Invocations of turbo filters in isDebugEnabled, isInfoEnabled()... remain as they were, untouched. However, any installed instances of TurboFilter are now invoked also from within the log(LoggingEvent) method of Logger with the contents of the LoggingEvent, typically via the fluent API. This fixes issues/871.

• Removed reentry-guard in most subclasses of UnsynchronizedAppenderBase where it was not needed.

• Initialization procedure has been simplified by removing the step instantiating a SerializedModelConfigurator. However, it is still possible to set up SerializedModelConfigurator as a custom configurator.

• JsonEncoder is now friendlier to derivation by sub-classes as requested in issues/979.

• Fixed XMLLayout thread safety issue reported in LOGBACK-427.

• Removed superfluous buffering in Zip, GZ and XZ compression code.

• A bit-wise identical binary of this version can be reproduced by building from source code at commit fed6f37ffe3449e40f6a9fffe050936a33116bd1 associated with the tag v_1.5.21. Release built using Java "21" 2023-10-17 LTS build 21.0.1.+12-LTS-29 under Linux Debian 11.6.

• 572379a prepare release 1.5.22
• 39d17ea fix status printing of variable substitution when the variable name contains ...
• 75509a9 fix PR 404, LOGBACK-543
• 8eb9356 remove unused import
• 6131a3a use a slightly more sophisticated guard for printing status messages
• 9efca21 add no-args constructor to support various serialization frameworks
• 1bea580 minor comment edits
• bd07fdd update angus, greenmail versions
• aef993c start work on 1.5.22-SNAPSHOT
• fed6f37 prepare release 1.5.21
• Additional commits viewable in compare view

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