From 33b89c9f80a5dd3102571cc02b76812d5016aa6d Mon Sep 17 00:00:00 2001
From: "dependabot[bot]" <49699333+dependabot[bot]@users.noreply.github.com>
Date: Sun, 5 Jul 2026 23:20:14 +0000
Subject: [PATCH 1/2] Bump ch.qos.logback:logback-core from 1.3.15 to 1.5.33

Bumps [ch.qos.logback:logback-core](https://github.com/qos-ch/logback) from 1.3.15 to 1.5.33.
- [Release notes](https://github.com/qos-ch/logback/releases)
- [Commits](https://github.com/qos-ch/logback/compare/v_1.3.15...v_1.5.33)

---
updated-dependencies:
- dependency-name: ch.qos.logback:logback-core
  dependency-version: 1.5.33
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>
---
 log4j-parent/pom.xml | 2 +-
 pom.xml              | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/log4j-parent/pom.xml b/log4j-parent/pom.xml
index 9a7b5aa2c87..51687df22f5 100644
--- a/log4j-parent/pom.xml
+++ b/log4j-parent/pom.xml
@@ -119,7 +119,7 @@
     <log4j-transform.version>0.2.0</log4j-transform.version>
     <log4j2-cachefile-transformer.version>2.15.0</log4j2-cachefile-transformer.version>
     <log4j2-ecs-layout.version>1.7.0</log4j2-ecs-layout.version>
-    <logback.version>1.3.15</logback.version>
+    <logback.version>1.5.33</logback.version>
     <maven.version>3.9.10</maven.version>
     <mockito.version>4.11.0</mockito.version>
     <nashorn.version>15.6</nashorn.version>
diff --git a/pom.xml b/pom.xml
index cbf95d3bc43..8c1843737e0 100644
--- a/pom.xml
+++ b/pom.xml
@@ -351,7 +351,7 @@
     <site-je.version>18.3.12</site-je.version>
     <site-jeromq.version>0.6.0</site-jeromq.version>
     <site-kafka.version>3.9.1</site-kafka.version>
-    <site-logback.version>1.3.15</site-logback.version>
+    <site-logback.version>1.5.33</site-logback.version>
     <site-slf4j.version>2.0.17</site-slf4j.version>
 
     <!-- =====================================================

From 775ce4f33db29c69ac1a9c8a6c74cbd3c1c20226 Mon Sep 17 00:00:00 2001
From: "github-actions[bot]"
 <41898282+github-actions[bot]@users.noreply.github.com>
Date: Sun, 5 Jul 2026 23:20:41 +0000
Subject: [PATCH 2/2] Generate changelog entries for #4173

---
 .../.2.x.x/update_ch.qos.logback_logback-core.xml         | 8 ++++++++
 1 file changed, 8 insertions(+)
 create mode 100644 src/changelog/.2.x.x/update_ch.qos.logback_logback-core.xml

diff --git a/src/changelog/.2.x.x/update_ch.qos.logback_logback-core.xml b/src/changelog/.2.x.x/update_ch.qos.logback_logback-core.xml
new file mode 100644
index 00000000000..e9002dbc071
--- /dev/null
+++ b/src/changelog/.2.x.x/update_ch.qos.logback_logback-core.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<entry xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+       xmlns="https://logging.apache.org/xml/ns"
+       xsi:schemaLocation="https://logging.apache.org/xml/ns https://logging.apache.org/xml/ns/log4j-changelog-0.xsd"
+       type="updated">
+  <issue id="4173" link="https://github.com/apache/logging-log4j2/pull/4173"/>
+  <description format="asciidoc">Update `ch.qos.logback:logback-core` to version `1.5.33`</description>
+</entry>