From 404f3fdcc46bdfc92350ff067e5688c68dab4fcc Mon Sep 17 00:00:00 2001
From: Andy Wilkinson <wilkinsona@vmware.com>
Date: Mon, 20 Feb 2023 14:53:11 +0000
Subject: [PATCH 01/19] Upgrade to Byte Buddy 1.12.23

Closes gh-34255
---
 spring-boot-project/spring-boot-dependencies/build.gradle | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/spring-boot-project/spring-boot-dependencies/build.gradle b/spring-boot-project/spring-boot-dependencies/build.gradle
index 121793a65a..8339b6bf0b 100644
--- a/spring-boot-project/spring-boot-dependencies/build.gradle
+++ b/spring-boot-project/spring-boot-dependencies/build.gradle
@@ -87,7 +87,7 @@ bom {
 			]
 		}
 	}
-	library("Byte Buddy", "1.12.22") {
+	library("Byte Buddy", "1.12.23") {
 		group("net.bytebuddy") {
 			modules = [
 				"byte-buddy",

From fcbe2f7df226c87cf4fb1697da3e3357767c4691 Mon Sep 17 00:00:00 2001
From: Andy Wilkinson <wilkinsona@vmware.com>
Date: Mon, 20 Feb 2023 14:53:16 +0000
Subject: [PATCH 02/19] Upgrade to Caffeine 3.1.4

Closes gh-34256
---
 spring-boot-project/spring-boot-dependencies/build.gradle | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/spring-boot-project/spring-boot-dependencies/build.gradle b/spring-boot-project/spring-boot-dependencies/build.gradle
index 8339b6bf0b..84a28393ab 100644
--- a/spring-boot-project/spring-boot-dependencies/build.gradle
+++ b/spring-boot-project/spring-boot-dependencies/build.gradle
@@ -107,7 +107,7 @@ bom {
 			]
 		}
 	}
-	library("Caffeine", "3.1.2") {
+	library("Caffeine", "3.1.4") {
 		group("com.github.ben-manes.caffeine") {
 			modules = [
 				"caffeine",

From f67dc159e72e578ba0cbabb371ad9579893065f5 Mon Sep 17 00:00:00 2001
From: Andy Wilkinson <wilkinsona@vmware.com>
Date: Mon, 20 Feb 2023 14:53:22 +0000
Subject: [PATCH 03/19] Upgrade to Couchbase Client 3.4.3

Closes gh-34257
---
 spring-boot-project/spring-boot-dependencies/build.gradle | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/spring-boot-project/spring-boot-dependencies/build.gradle b/spring-boot-project/spring-boot-dependencies/build.gradle
index 84a28393ab..a350909b4f 100644
--- a/spring-boot-project/spring-boot-dependencies/build.gradle
+++ b/spring-boot-project/spring-boot-dependencies/build.gradle
@@ -173,7 +173,7 @@ bom {
 			]
 		}
 	}
-	library("Couchbase Client", "3.4.2") {
+	library("Couchbase Client", "3.4.3") {
 		group("com.couchbase.client") {
 			modules = [
 				"java-client"

From 76f8c0533a390d43356b9effcbb2ee871051e290 Mon Sep 17 00:00:00 2001
From: Andy Wilkinson <wilkinsona@vmware.com>
Date: Mon, 20 Feb 2023 14:53:27 +0000
Subject: [PATCH 04/19] Upgrade to Dropwizard Metrics 4.2.16

Closes gh-34258
---
 spring-boot-project/spring-boot-dependencies/build.gradle | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/spring-boot-project/spring-boot-dependencies/build.gradle b/spring-boot-project/spring-boot-dependencies/build.gradle
index a350909b4f..129e680ab4 100644
--- a/spring-boot-project/spring-boot-dependencies/build.gradle
+++ b/spring-boot-project/spring-boot-dependencies/build.gradle
@@ -206,7 +206,7 @@ bom {
 			]
 		}
 	}
-	library("Dropwizard Metrics", "4.2.15") {
+	library("Dropwizard Metrics", "4.2.16") {
 		group("io.dropwizard.metrics") {
 			imports = [
 				"metrics-bom"

From c9718e7326f4012d242b2a1d51f443f6277ce588 Mon Sep 17 00:00:00 2001
From: Andy Wilkinson <wilkinsona@vmware.com>
Date: Mon, 20 Feb 2023 14:53:34 +0000
Subject: [PATCH 05/19] Upgrade to Glassfish JAXB 4.0.2

Closes gh-34259
---
 spring-boot-project/spring-boot-dependencies/build.gradle | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/spring-boot-project/spring-boot-dependencies/build.gradle b/spring-boot-project/spring-boot-dependencies/build.gradle
index 129e680ab4..a9c38a39a6 100644
--- a/spring-boot-project/spring-boot-dependencies/build.gradle
+++ b/spring-boot-project/spring-boot-dependencies/build.gradle
@@ -270,7 +270,7 @@ bom {
 			]
 		}
 	}
-	library("Glassfish JAXB", "4.0.1") {
+	library("Glassfish JAXB", "4.0.2") {
 		group("org.glassfish.jaxb") {
 			imports = [
 				"jaxb-bom"

From 83b7060dcd81ecbce4c88a9c975314305d0ffddf Mon Sep 17 00:00:00 2001
From: Andy Wilkinson <wilkinsona@vmware.com>
Date: Mon, 20 Feb 2023 14:53:40 +0000
Subject: [PATCH 06/19] Upgrade to Groovy 4.0.9

Closes gh-34260
---
 spring-boot-project/spring-boot-dependencies/build.gradle | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/spring-boot-project/spring-boot-dependencies/build.gradle b/spring-boot-project/spring-boot-dependencies/build.gradle
index a9c38a39a6..083dec1746 100644
--- a/spring-boot-project/spring-boot-dependencies/build.gradle
+++ b/spring-boot-project/spring-boot-dependencies/build.gradle
@@ -291,7 +291,7 @@ bom {
 			]
 		}
 	}
-	library("Groovy", "4.0.7") {
+	library("Groovy", "4.0.9") {
 		group("org.apache.groovy") {
 			imports = [
 				"groovy-bom"

From 96dbd09ec56cbce4f9f617e11928b53be9f4d96f Mon Sep 17 00:00:00 2001
From: Andy Wilkinson <wilkinsona@vmware.com>
Date: Mon, 20 Feb 2023 14:53:44 +0000
Subject: [PATCH 07/19] Upgrade to Hibernate 6.1.7.Final

Closes gh-34261
---
 spring-boot-project/spring-boot-dependencies/build.gradle | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/spring-boot-project/spring-boot-dependencies/build.gradle b/spring-boot-project/spring-boot-dependencies/build.gradle
index 083dec1746..d0322bb641 100644
--- a/spring-boot-project/spring-boot-dependencies/build.gradle
+++ b/spring-boot-project/spring-boot-dependencies/build.gradle
@@ -329,7 +329,7 @@ bom {
 			]
 		}
 	}
-	library("Hibernate", "6.1.6.Final") {
+	library("Hibernate", "6.1.7.Final") {
 		group("org.hibernate.orm") {
 			modules = [
 				"hibernate-agroal",

From 41edf24016ee7ac2280ab20b4a64ae777bbb1e0d Mon Sep 17 00:00:00 2001
From: Andy Wilkinson <wilkinsona@vmware.com>
Date: Mon, 20 Feb 2023 14:53:50 +0000
Subject: [PATCH 08/19] Upgrade to Jackson Bom 2.14.2

Closes gh-34262
---
 spring-boot-project/spring-boot-dependencies/build.gradle | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/spring-boot-project/spring-boot-dependencies/build.gradle b/spring-boot-project/spring-boot-dependencies/build.gradle
index d0322bb641..eb860402ca 100644
--- a/spring-boot-project/spring-boot-dependencies/build.gradle
+++ b/spring-boot-project/spring-boot-dependencies/build.gradle
@@ -445,7 +445,7 @@ bom {
 			]
 		}
 	}
-	library("Jackson Bom", "2.14.1") {
+	library("Jackson Bom", "2.14.2") {
 		group("com.fasterxml.jackson") {
 			imports = [
 				"jackson-bom"

From dd94e2a1a1ad50659cc135f845240f851fbb50cb Mon Sep 17 00:00:00 2001
From: Andy Wilkinson <wilkinsona@vmware.com>
Date: Mon, 20 Feb 2023 14:53:55 +0000
Subject: [PATCH 09/19] Upgrade to Jaybird 4.0.9.java11

Closes gh-34263
---
 spring-boot-project/spring-boot-dependencies/build.gradle | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/spring-boot-project/spring-boot-dependencies/build.gradle b/spring-boot-project/spring-boot-dependencies/build.gradle
index eb860402ca..5e61b769a2 100644
--- a/spring-boot-project/spring-boot-dependencies/build.gradle
+++ b/spring-boot-project/spring-boot-dependencies/build.gradle
@@ -602,7 +602,7 @@ bom {
 			]
 		}
 	}
-	library("Jaybird", "4.0.8.java11") {
+	library("Jaybird", "4.0.9.java11") {
 		group("org.firebirdsql.jdbc") {
 			modules = [
 				"jaybird"

From 497fa08bfe764847977664889d1ec90d9247b0e7 Mon Sep 17 00:00:00 2001
From: Andy Wilkinson <wilkinsona@vmware.com>
Date: Mon, 20 Feb 2023 14:54:00 +0000
Subject: [PATCH 10/19] Upgrade to Jersey 3.1.1

Closes gh-34264
---
 spring-boot-project/spring-boot-dependencies/build.gradle | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/spring-boot-project/spring-boot-dependencies/build.gradle b/spring-boot-project/spring-boot-dependencies/build.gradle
index 5e61b769a2..bbbbeac036 100644
--- a/spring-boot-project/spring-boot-dependencies/build.gradle
+++ b/spring-boot-project/spring-boot-dependencies/build.gradle
@@ -630,7 +630,7 @@ bom {
 			]
 		}
 	}
-	library("Jersey", "3.1.0") {
+	library("Jersey", "3.1.1") {
 		group("org.glassfish.jersey") {
 			imports = [
 				"jersey-bom"

From 8cdd73f0886a4b305a9f848d0596edea7530f3da Mon Sep 17 00:00:00 2001
From: Andy Wilkinson <wilkinsona@vmware.com>
Date: Mon, 20 Feb 2023 14:54:05 +0000
Subject: [PATCH 11/19] Upgrade to jOOQ 3.17.8

Closes gh-34265
---
 spring-boot-project/spring-boot-dependencies/build.gradle | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/spring-boot-project/spring-boot-dependencies/build.gradle b/spring-boot-project/spring-boot-dependencies/build.gradle
index bbbbeac036..4381b452d1 100644
--- a/spring-boot-project/spring-boot-dependencies/build.gradle
+++ b/spring-boot-project/spring-boot-dependencies/build.gradle
@@ -658,7 +658,7 @@ bom {
 			]
 		}
 	}
-	library("jOOQ", "3.17.7") {
+	library("jOOQ", "3.17.8") {
 		group("org.jooq") {
 			modules = [
 				"jooq",

From 45e9de3a30952860e12bc51a06248639d974014b Mon Sep 17 00:00:00 2001
From: Andy Wilkinson <wilkinsona@vmware.com>
Date: Mon, 20 Feb 2023 14:54:10 +0000
Subject: [PATCH 12/19] Upgrade to Lettuce 6.2.3.RELEASE

Closes gh-34266
---
 spring-boot-project/spring-boot-dependencies/build.gradle | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/spring-boot-project/spring-boot-dependencies/build.gradle b/spring-boot-project/spring-boot-dependencies/build.gradle
index 4381b452d1..1b2d9f766b 100644
--- a/spring-boot-project/spring-boot-dependencies/build.gradle
+++ b/spring-boot-project/spring-boot-dependencies/build.gradle
@@ -772,7 +772,7 @@ bom {
 			]
 		}
 	}
-	library("Lettuce", "6.2.2.RELEASE") {
+	library("Lettuce", "6.2.3.RELEASE") {
 		group("io.lettuce") {
 			modules = [
 				"lettuce-core"

From 81bbabd1ccd67de226dbd23080aef1a7a9ece418 Mon Sep 17 00:00:00 2001
From: Andy Wilkinson <wilkinsona@vmware.com>
Date: Mon, 20 Feb 2023 14:54:15 +0000
Subject: [PATCH 13/19] Upgrade to Lombok 1.18.26

Closes gh-34267
---
 spring-boot-project/spring-boot-dependencies/build.gradle | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/spring-boot-project/spring-boot-dependencies/build.gradle b/spring-boot-project/spring-boot-dependencies/build.gradle
index 1b2d9f766b..5fb8116e28 100644
--- a/spring-boot-project/spring-boot-dependencies/build.gradle
+++ b/spring-boot-project/spring-boot-dependencies/build.gradle
@@ -806,7 +806,7 @@ bom {
 			]
 		}
 	}
-	library("Lombok", "1.18.24") {
+	library("Lombok", "1.18.26") {
 		group("org.projectlombok") {
 			modules = [
 				"lombok"

From 2ac4a9fe9e87a75c3fa4bebfd11b4c94a3ab2041 Mon Sep 17 00:00:00 2001
From: Andy Wilkinson <wilkinsona@vmware.com>
Date: Mon, 20 Feb 2023 14:54:20 +0000
Subject: [PATCH 14/19] Upgrade to Native Build Tools Plugin 0.9.20

Closes gh-34268
---
 gradle.properties | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gradle.properties b/gradle.properties
index b2f18ccc52..61bb4c4d4e 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -6,6 +6,6 @@ org.gradle.jvmargs=-Xmx2g -Dfile.encoding=UTF-8
 
 kotlinVersion=1.7.22
 tomcatVersion=10.1.5
-nativeBuildToolsVersion=0.9.19
+nativeBuildToolsVersion=0.9.20
 
 kotlin.stdlib.default.dependency=false

From 5e9c00290ec2df2549f1349e2fd23061068f7975 Mon Sep 17 00:00:00 2001
From: Andy Wilkinson <wilkinsona@vmware.com>
Date: Mon, 20 Feb 2023 14:54:25 +0000
Subject: [PATCH 15/19] Upgrade to Netty 4.1.89.Final

Closes gh-34269
---
 spring-boot-project/spring-boot-dependencies/build.gradle | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/spring-boot-project/spring-boot-dependencies/build.gradle b/spring-boot-project/spring-boot-dependencies/build.gradle
index 5fb8116e28..c0ccafe259 100644
--- a/spring-boot-project/spring-boot-dependencies/build.gradle
+++ b/spring-boot-project/spring-boot-dependencies/build.gradle
@@ -1025,7 +1025,7 @@ bom {
 			]
 		}
 	}
-	library("Netty", "4.1.87.Final") {
+	library("Netty", "4.1.89.Final") {
 		group("io.netty") {
 			imports = [
 				"netty-bom"

From 19bafec091f7a6bff576d0134ab9705934d6acac Mon Sep 17 00:00:00 2001
From: Andy Wilkinson <wilkinsona@vmware.com>
Date: Mon, 20 Feb 2023 14:54:31 +0000
Subject: [PATCH 16/19] Upgrade to Postgresql 42.5.4

Closes gh-34270
---
 spring-boot-project/spring-boot-dependencies/build.gradle | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/spring-boot-project/spring-boot-dependencies/build.gradle b/spring-boot-project/spring-boot-dependencies/build.gradle
index c0ccafe259..a3256f1e59 100644
--- a/spring-boot-project/spring-boot-dependencies/build.gradle
+++ b/spring-boot-project/spring-boot-dependencies/build.gradle
@@ -1067,7 +1067,7 @@ bom {
 			]
 		}
 	}
-	library("Postgresql", "42.5.1") {
+	library("Postgresql", "42.5.4") {
 		group("org.postgresql") {
 			modules = [
 				"postgresql"

From c28d7fcc3680032c9e4dc592d6a4a6dfc6e0e85e Mon Sep 17 00:00:00 2001
From: Andy Wilkinson <wilkinsona@vmware.com>
Date: Mon, 20 Feb 2023 14:54:36 +0000
Subject: [PATCH 17/19] Upgrade to R2DBC Postgresql 1.0.1.RELEASE

Closes gh-34271
---
 spring-boot-project/spring-boot-dependencies/build.gradle | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/spring-boot-project/spring-boot-dependencies/build.gradle b/spring-boot-project/spring-boot-dependencies/build.gradle
index a3256f1e59..42952ecd58 100644
--- a/spring-boot-project/spring-boot-dependencies/build.gradle
+++ b/spring-boot-project/spring-boot-dependencies/build.gradle
@@ -1113,7 +1113,7 @@ bom {
 			]
 		}
 	}
-	library("R2DBC Postgresql", "1.0.0.RELEASE") {
+	library("R2DBC Postgresql", "1.0.1.RELEASE") {
 		group("org.postgresql") {
 			modules = [
 				"r2dbc-postgresql"

From 3614232bfb39ae4ec689e1efb636fe2565f38c26 Mon Sep 17 00:00:00 2001
From: Andy Wilkinson <wilkinsona@vmware.com>
Date: Mon, 20 Feb 2023 14:54:41 +0000
Subject: [PATCH 18/19] Upgrade to Spring HATEOAS 2.0.2

Closes gh-34272
---
 spring-boot-project/spring-boot-dependencies/build.gradle | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/spring-boot-project/spring-boot-dependencies/build.gradle b/spring-boot-project/spring-boot-dependencies/build.gradle
index 42952ecd58..898af54e40 100644
--- a/spring-boot-project/spring-boot-dependencies/build.gradle
+++ b/spring-boot-project/spring-boot-dependencies/build.gradle
@@ -1370,7 +1370,7 @@ bom {
 			]
 		}
 	}
-	library("Spring HATEOAS", "2.0.1") {
+	library("Spring HATEOAS", "2.0.2") {
 		group("org.springframework.hateoas") {
 			modules = [
 				"spring-hateoas"

From 6983850a2cfd686d868c4f5fd72a866926531840 Mon Sep 17 00:00:00 2001
From: Andy Wilkinson <wilkinsona@vmware.com>
Date: Mon, 20 Feb 2023 14:54:46 +0000
Subject: [PATCH 19/19] Upgrade to Undertow 2.3.4.Final

Closes gh-34273
---
 .../autoconfigure/web/ServerProperties.java   | 24 +++++++++++++++++--
 .../UndertowWebServerFactoryCustomizer.java   | 12 ++++++++--
 ...dertowWebServerFactoryCustomizerTests.java |  9 ++++++-
 .../spring-boot-dependencies/build.gradle     |  2 +-
 4 files changed, 41 insertions(+), 6 deletions(-)

diff --git a/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/web/ServerProperties.java b/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/web/ServerProperties.java
index d54ef0e832..b68c3fe6db 100644
--- a/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/web/ServerProperties.java
+++ b/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/web/ServerProperties.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2022 the original author or authors.
+ * Copyright 2012-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -1506,10 +1506,19 @@ public class ServerProperties {
 		 * Whether the server should decode percent encoded slash characters. Enabling
 		 * encoded slashes can have security implications due to different servers
 		 * interpreting the slash differently. Only enable this if you have a legacy
-		 * application that requires it.
+		 * application that requires it. Has no effect when server.undertow.decode-slash
+		 * is set.
 		 */
 		private boolean allowEncodedSlash = false;
 
+		/**
+		 * Whether encoded slash characters (%2F) should be decoded. Decoding can cause
+		 * security problems if a front-end proxy does not perform the same decoding. Only
+		 * enable this if you have a legacy application that requires it. When set,
+		 * server.undertow.allow-encoded-slash has no effect.
+		 */
+		private Boolean decodeSlash;
+
 		/**
 		 * Whether the URL should be decoded. When disabled, percent-encoded characters in
 		 * the URL will be left as-is.
@@ -1603,14 +1612,25 @@ public class ServerProperties {
 			this.maxCookies = maxCookies;
 		}
 
+		@DeprecatedConfigurationProperty(replacement = "server.undertow.decode-slash")
+		@Deprecated(forRemoval = true, since = "3.0.3")
 		public boolean isAllowEncodedSlash() {
 			return this.allowEncodedSlash;
 		}
 
+		@Deprecated(forRemoval = true, since = "3.0.3")
 		public void setAllowEncodedSlash(boolean allowEncodedSlash) {
 			this.allowEncodedSlash = allowEncodedSlash;
 		}
 
+		public Boolean getDecodeSlash() {
+			return this.decodeSlash;
+		}
+
+		public void setDecodeSlash(Boolean decodeSlash) {
+			this.decodeSlash = decodeSlash;
+		}
+
 		public boolean isDecodeUrl() {
 			return this.decodeUrl;
 		}
diff --git a/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/web/embedded/UndertowWebServerFactoryCustomizer.java b/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/web/embedded/UndertowWebServerFactoryCustomizer.java
index 4a07c8e1cf..aaeacf0b11 100644
--- a/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/web/embedded/UndertowWebServerFactoryCustomizer.java
+++ b/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/web/embedded/UndertowWebServerFactoryCustomizer.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2022 the original author or authors.
+ * Copyright 2012-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -98,7 +98,7 @@ public class UndertowWebServerFactoryCustomizer
 		map.from(properties::getMaxParameters).to(serverOptions.option(UndertowOptions.MAX_PARAMETERS));
 		map.from(properties::getMaxHeaders).to(serverOptions.option(UndertowOptions.MAX_HEADERS));
 		map.from(properties::getMaxCookies).to(serverOptions.option(UndertowOptions.MAX_COOKIES));
-		map.from(properties::isAllowEncodedSlash).to(serverOptions.option(UndertowOptions.ALLOW_ENCODED_SLASH));
+		mapSlashProperties(properties, serverOptions);
 		map.from(properties::isDecodeUrl).to(serverOptions.option(UndertowOptions.DECODE_URL));
 		map.from(properties::getUrlCharset).as(Charset::name).to(serverOptions.option(UndertowOptions.URL_CHARSET));
 		map.from(properties::isAlwaysSetKeepAlive).to(serverOptions.option(UndertowOptions.ALWAYS_SET_KEEP_ALIVE));
@@ -109,6 +109,14 @@ public class UndertowWebServerFactoryCustomizer
 		map.from(properties.getOptions()::getSocket).to(socketOptions.forEach(socketOptions::option));
 	}
 
+	@SuppressWarnings({ "deprecation", "removal" })
+	private void mapSlashProperties(Undertow properties, ServerOptions serverOptions) {
+		PropertyMapper map = PropertyMapper.get().alwaysApplyingWhenNonNull();
+		map.from(properties::isAllowEncodedSlash).to(serverOptions.option(UndertowOptions.ALLOW_ENCODED_SLASH));
+		map.from(properties::getDecodeSlash).to(serverOptions.option(UndertowOptions.DECODE_SLASH));
+
+	}
+
 	private boolean isPositive(Number value) {
 		return value.longValue() > 0;
 	}
diff --git a/spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/web/embedded/UndertowWebServerFactoryCustomizerTests.java b/spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/web/embedded/UndertowWebServerFactoryCustomizerTests.java
index 53fec27b8d..464dd440ed 100644
--- a/spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/web/embedded/UndertowWebServerFactoryCustomizerTests.java
+++ b/spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/web/embedded/UndertowWebServerFactoryCustomizerTests.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2022 the original author or authors.
+ * Copyright 2012-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -150,11 +150,18 @@ class UndertowWebServerFactoryCustomizerTests {
 	}
 
 	@Test
+	@Deprecated(forRemoval = true, since = "3.0.3")
 	void allowEncodedSlashes() {
 		bind("server.undertow.allow-encoded-slash=true");
 		assertThat(boundServerOption(UndertowOptions.ALLOW_ENCODED_SLASH)).isTrue();
 	}
 
+	@Test
+	void enableSlashDecoding() {
+		bind("server.undertow.decode-slash=true");
+		assertThat(boundServerOption(UndertowOptions.DECODE_SLASH)).isTrue();
+	}
+
 	@Test
 	void disableUrlDecoding() {
 		bind("server.undertow.decode-url=false");
diff --git a/spring-boot-project/spring-boot-dependencies/build.gradle b/spring-boot-project/spring-boot-dependencies/build.gradle
index 898af54e40..f366eb3149 100644
--- a/spring-boot-project/spring-boot-dependencies/build.gradle
+++ b/spring-boot-project/spring-boot-dependencies/build.gradle
@@ -1502,7 +1502,7 @@ bom {
 			]
 		}
 	}
-	library("Undertow", "2.3.3.Final") {
+	library("Undertow", "2.3.4.Final") {
 		group("io.undertow") {
 			modules = [
 				"undertow-core",