diff --git a/.github/scripts/download-bundled/.gitignore b/.github/scripts/download-bundled/.gitignore
new file mode 100644
index 000000000000..69f1bf453095
--- /dev/null
+++ b/.github/scripts/download-bundled/.gitignore
@@ -0,0 +1 @@
+!*.patch
diff --git a/.github/scripts/download-bundled/boost-context.sh b/.github/scripts/download-bundled/boost-context.sh
new file mode 100755
index 000000000000..b1fd8708b85b
--- /dev/null
+++ b/.github/scripts/download-bundled/boost-context.sh
@@ -0,0 +1,41 @@
+#!/bin/sh
+set -ex
+cd "$(dirname "$0")/../../.."
+
+tmp_dir=/tmp/php-src-download-bundled/boost-context
+rm -rf "$tmp_dir"
+
+revision=refs/tags/boost-1.86.0
+
+git clone --depth 1 --revision="$revision" https://github.com/boostorg/context.git "$tmp_dir"
+
+rm -rf Zend/asm
+cp -R "$tmp_dir"/src/asm Zend/asm
+
+cd Zend/asm
+
+# remove unneeded files
+rm jump_arm_aapcs_pe_armasm.asm
+rm jump_i386_ms_pe_clang_gas.S
+rm jump_i386_ms_pe_gas.asm
+rm jump_i386_x86_64_sysv_macho_gas.S
+rm jump_ppc32_ppc64_sysv_macho_gas.S
+rm jump_x86_64_ms_pe_clang_gas.S
+rm make_arm_aapcs_pe_armasm.asm
+rm make_i386_ms_pe_clang_gas.S
+rm make_i386_ms_pe_gas.asm
+rm make_i386_x86_64_sysv_macho_gas.S
+rm make_ppc32_ppc64_sysv_macho_gas.S
+rm make_x86_64_ms_pe_clang_gas.S
+rm ontop_*.S
+rm ontop_*.asm
+rm tail_ontop_ppc32_sysv.cpp
+
+# move renamed files
+# GH-13896 introduced these 2 files named as .S but since https://github.com/boostorg/context/pull/265 they are named as .asm
+mv jump_x86_64_ms_pe_gas.asm jump_x86_64_ms_pe_gas.S
+mv make_x86_64_ms_pe_gas.asm make_x86_64_ms_pe_gas.S
+
+# add extra files
+git restore LICENSE
+git restore save_xmm_x86_64_ms_masm.asm # added in GH-18352, not an upstream boost.context file
diff --git a/.github/scripts/download-bundled/pcre2.sh b/.github/scripts/download-bundled/pcre2.sh
index b43554206c92..360cbb91db82 100755
--- a/.github/scripts/download-bundled/pcre2.sh
+++ b/.github/scripts/download-bundled/pcre2.sh
@@ -2,12 +2,15 @@
 set -ex
 cd "$(dirname "$0")/../../.."
 
+tmp_dir=/tmp/php-src-download-bundled/pcre2
+rm -rf "$tmp_dir"
+
 revision=refs/tags/pcre2-10.44
 
-git clone --depth 1 --recurse-submodules --revision="$revision" https://github.com/PCRE2Project/pcre2.git /tmp/php-src-bundled/pcre2
+git clone --depth 1 --recurse-submodules --revision="$revision" https://github.com/PCRE2Project/pcre2.git "$tmp_dir"
 
 rm -rf ext/pcre/pcre2lib
-cp -R /tmp/php-src-bundled/pcre2/src ext/pcre/pcre2lib
+cp -R "$tmp_dir"/src ext/pcre/pcre2lib
 
 cd ext/pcre/pcre2lib
 
diff --git a/.github/scripts/download-bundled/uriparser.config.patch b/.github/scripts/download-bundled/uriparser.config.patch
new file mode 100644
index 000000000000..9742154e5d7c
--- /dev/null
+++ b/.github/scripts/download-bundled/uriparser.config.patch
@@ -0,0 +1,14 @@
+diff --git a/ext/uri/uriparser/src/UriConfig.h b/ext/uri/uriparser/src/UriConfig.h
+index b9a85a8..ab78b96 100644
+--- a/ext/uri/uriparser/src/UriConfig.h
++++ b/ext/uri/uriparser/src/UriConfig.h
+@@ -41,7 +41,9 @@
+ 
+ #  define PACKAGE_VERSION "@PROJECT_VERSION@"
+ 
++/*
+ #cmakedefine HAVE_WPRINTF
+ #cmakedefine HAVE_REALLOCARRAY
++*/
+ 
+ #endif /* !defined(URI_CONFIG_H) */
diff --git a/.github/scripts/download-bundled/uriparser.sh b/.github/scripts/download-bundled/uriparser.sh
new file mode 100755
index 000000000000..8820a67333f0
--- /dev/null
+++ b/.github/scripts/download-bundled/uriparser.sh
@@ -0,0 +1,24 @@
+#!/bin/sh
+set -ex
+cd "$(dirname "$0")/../../.."
+
+tmp_dir=/tmp/php-src-download-bundled/uriparser
+rm -rf "$tmp_dir"
+
+revision=refs/tags/uriparser-1.0.0
+
+git clone --depth 1 --revision="$revision" https://github.com/uriparser/uriparser.git "$tmp_dir"
+
+rm -rf ext/uri/uriparser
+mkdir ext/uri/uriparser
+cp -R "$tmp_dir"/src ext/uri/uriparser
+cp -R "$tmp_dir"/include ext/uri/uriparser
+cp "$tmp_dir"/COPYING.BSD-3-Clause ext/uri/uriparser
+
+cd ext/uri/uriparser
+
+# move renamed files
+mv src/UriConfig.h.in src/UriConfig.h
+
+# patch customized files
+git apply -v ../../../.github/scripts/download-bundled/uriparser.config.patch
diff --git a/.github/scripts/test-directory-unchanged.sh b/.github/scripts/test-directory-unchanged.sh
index 0ce7fd4cc4af..20ca410e4ec9 100755
--- a/.github/scripts/test-directory-unchanged.sh
+++ b/.github/scripts/test-directory-unchanged.sh
@@ -1,13 +1,16 @@
 #!/bin/sh
 set -ex
 
-cd "$(dirname "$0")/../../$1"
+# use the repo root directory as "--git-dir"
+cd "$(dirname "$0")/../.."
+
+dir="$1"
 
 # notify git about untracked (except ignored) files
-git add -N .
+git add -N "$dir"
 
 # display overview of changed files
-git status .
+git status "$dir"
 
 # display diff of working directory vs HEAD commit and set exit code
-git diff -a --exit-code HEAD .
+git diff -a --exit-code HEAD "$dir"
diff --git a/.github/workflows/verify-bundled-files.yml b/.github/workflows/verify-bundled-files.yml
index 291cd6adaa3d..473d6e2d8f4d 100644
--- a/.github/workflows/verify-bundled-files.yml
+++ b/.github/workflows/verify-bundled-files.yml
@@ -3,8 +3,10 @@ name: Verify Bundled Files
 on:
   push:
     paths: &paths
-      - '.github/scripts/download-bundled/pcre2.sh'
+      - '.github/scripts/download-bundled/**'
+      - 'Zend/asm/**'
       - 'ext/pcre/pcre2lib/**'
+      - 'ext/uri/uriparser/**'
   pull_request:
     paths: *paths
   schedule:
@@ -24,15 +26,30 @@ jobs:
         uses: actions/checkout@v6
 
       - name: Detect changed files
+        if: ${{ github.event_name == 'push' || github.event_name == 'pull_request' }}
         uses: dorny/paths-filter@v3
         id: changes
         with:
-          base: master
           filters: |
+            'boost-context':
+              - '.github/scripts/download-bundled/boost-context.*'
+              - 'Zend/asm/**'
             pcre2:
-              - '.github/scripts/download-bundled/pcre2.sh'
+              - '.github/scripts/download-bundled/pcre2.*'
               - 'ext/pcre/pcre2lib/**'
+            uriparser:
+              - '.github/scripts/download-bundled/uriparser.*'
+              - 'ext/uri/uriparser/**'
 
+      - name: 'boost.context'
+        if: ${{ !cancelled() && (steps.changes.outputs.boost-context == 'true' || github.event_name == 'schedule' || github.event_name == 'workflow_dispatch') }}
+        run: |
+          echo "::group::Download"
+          .github/scripts/download-bundled/boost-context.sh
+          echo "::endgroup::"
+          echo "::group::Verify files"
+          .github/scripts/test-directory-unchanged.sh Zend/asm
+          echo "::endgroup::"
       - name: PCRE2
         if: ${{ !cancelled() && (steps.changes.outputs.pcre2 == 'true' || github.event_name == 'schedule' || github.event_name == 'workflow_dispatch') }}
         run: |
@@ -42,3 +59,12 @@ jobs:
           echo "::group::Verify files"
           .github/scripts/test-directory-unchanged.sh ext/pcre/pcre2lib
           echo "::endgroup::"
+      - name: uriparser
+        if: ${{ !cancelled() && (steps.changes.outputs.uriparser == 'true' || github.event_name == 'schedule' || github.event_name == 'workflow_dispatch') }}
+        run: |
+          echo "::group::Download"
+          .github/scripts/download-bundled/uriparser.sh
+          echo "::endgroup::"
+          echo "::group::Verify files"
+          .github/scripts/test-directory-unchanged.sh ext/uri/uriparser
+          echo "::endgroup::"
diff --git a/UPGRADING.INTERNALS b/UPGRADING.INTERNALS
index 83ef90e55587..06c1d5282622 100644
--- a/UPGRADING.INTERNALS
+++ b/UPGRADING.INTERNALS
@@ -70,6 +70,8 @@ PHP 8.6 INTERNALS UPGRADE NOTES
     performed on the result.
   . The zend_dval_to_lval_cap() function no longer takes a second
     zend_string* parameter.
+  . EG(in_autoload) was renamed to EG(autoload_current_classnames) and no
+    longer is a pointer, but a directly embedded HashTable struct.
 
 ========================
 2. Build system changes
diff --git a/Zend/zend.c b/Zend/zend.c
index 49e18f1a777c..bce1faede8fb 100644
--- a/Zend/zend.c
+++ b/Zend/zend.c
@@ -811,7 +811,6 @@ static void executor_globals_ctor(zend_executor_globals *executor_globals) /* {{
 	executor_globals->user_error_handler_error_reporting = 0;
 	ZVAL_UNDEF(&executor_globals->user_error_handler);
 	ZVAL_UNDEF(&executor_globals->user_exception_handler);
-	executor_globals->in_autoload = NULL;
 	executor_globals->current_execute_data = NULL;
 	executor_globals->current_module = NULL;
 	executor_globals->exit_status = 0;
diff --git a/Zend/zend_execute_API.c b/Zend/zend_execute_API.c
index f9309be99f0e..dbd2a9039cfc 100644
--- a/Zend/zend_execute_API.c
+++ b/Zend/zend_execute_API.c
@@ -145,7 +145,6 @@ void init_executor(void) /* {{{ */
 	EG(function_table) = CG(function_table);
 	EG(class_table) = CG(class_table);
 
-	EG(in_autoload) = NULL;
 	EG(error_handling) = EH_NORMAL;
 	EG(flags) = EG_FLAGS_INITIAL;
 
@@ -156,6 +155,7 @@ void init_executor(void) /* {{{ */
 	zend_llist_apply(&zend_extensions, (llist_apply_func_t) zend_extension_activator);
 
 	zend_hash_init(&EG(included_files), 8, NULL, NULL, 0);
+	zend_hash_init(&EG(autoload_current_classnames), 8, NULL, NULL, 0);
 
 	EG(ticks_count) = 0;
 
@@ -503,16 +503,13 @@ void shutdown_executor(void) /* {{{ */
 		}
 
 		zend_hash_destroy(&EG(included_files));
+		zend_hash_destroy(&EG(autoload_current_classnames));
 
 		zend_stack_destroy(&EG(user_error_handlers_error_reporting));
 		zend_stack_destroy(&EG(user_error_handlers));
 		zend_stack_destroy(&EG(user_exception_handlers));
 		zend_lazy_objects_destroy(&EG(lazy_objects_store));
 		zend_objects_store_destroy(&EG(objects_store));
-		if (EG(in_autoload)) {
-			zend_hash_destroy(EG(in_autoload));
-			FREE_HASHTABLE(EG(in_autoload));
-		}
 
 		if (EG(ht_iterators) != EG(ht_iterators_slots)) {
 			efree(EG(ht_iterators));
@@ -1245,12 +1242,7 @@ ZEND_API zend_class_entry *zend_lookup_class_ex(zend_string *name, zend_string *
 		return NULL;
 	}
 
-	if (EG(in_autoload) == NULL) {
-		ALLOC_HASHTABLE(EG(in_autoload));
-		zend_hash_init(EG(in_autoload), 8, NULL, NULL, 0);
-	}
-
-	if (zend_hash_add_empty_element(EG(in_autoload), lc_name) == NULL) {
+	if (zend_hash_add_empty_element(&EG(autoload_current_classnames), lc_name) == NULL) {
 		if (!key) {
 			zend_string_release_ex(lc_name, 0);
 		}
@@ -1272,7 +1264,7 @@ ZEND_API zend_class_entry *zend_lookup_class_ex(zend_string *name, zend_string *
 	EG(lineno_override) = previous_lineno;
 
 	zend_string_release_ex(autoload_name, 0);
-	zend_hash_del(EG(in_autoload), lc_name);
+	zend_hash_del(&EG(autoload_current_classnames), lc_name);
 
 	if (!key) {
 		zend_string_release_ex(lc_name, 0);
diff --git a/Zend/zend_globals.h b/Zend/zend_globals.h
index f09b81acb315..31f54cd8284b 100644
--- a/Zend/zend_globals.h
+++ b/Zend/zend_globals.h
@@ -220,7 +220,7 @@ struct _zend_executor_globals {
 	zend_atomic_bool vm_interrupt;
 	zend_atomic_bool timed_out;
 
-	HashTable *in_autoload;
+	HashTable autoload_current_classnames;
 
 	zend_long hard_timeout;
 	void *stack_base;
diff --git a/ext/uri/uriparser/src/UriConfig.h b/ext/uri/uriparser/src/UriConfig.h
index e265c0a9a115..ab78b96cd808 100644
--- a/ext/uri/uriparser/src/UriConfig.h
+++ b/ext/uri/uriparser/src/UriConfig.h
@@ -42,8 +42,8 @@
 #  define PACKAGE_VERSION "@PROJECT_VERSION@"
 
 /*
-#define HAVE_WPRINTF
-#define HAVE_REALLOCARRAY
+#cmakedefine HAVE_WPRINTF
+#cmakedefine HAVE_REALLOCARRAY
 */
 
 #endif /* !defined(URI_CONFIG_H) */
diff --git a/ext/uri/uriparser/src/UriConfig.h.in b/ext/uri/uriparser/src/UriConfig.h.in
deleted file mode 100644
index b9a85a8fe02a..000000000000
--- a/ext/uri/uriparser/src/UriConfig.h.in
+++ /dev/null
@@ -1,47 +0,0 @@
-/*
- * uriparser - RFC 3986 URI parsing library
- *
- * Copyright (C) 2018, Sebastian Pipping <sebastian@pipping.org>
- * All rights reserved.
- *
- * Redistribution and use in source  and binary forms, with or without
- * modification, are permitted provided  that the following conditions
- * are met:
- *
- *     1. Redistributions  of  source  code   must  retain  the  above
- *        copyright notice, this list  of conditions and the following
- *        disclaimer.
- *
- *     2. Redistributions  in binary  form  must  reproduce the  above
- *        copyright notice, this list  of conditions and the following
- *        disclaimer  in  the  documentation  and/or  other  materials
- *        provided with the distribution.
- *
- *     3. Neither the  name of the  copyright holder nor the  names of
- *        its contributors may be used  to endorse or promote products
- *        derived from  this software  without specific  prior written
- *        permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND  ANY EXPRESS OR IMPLIED WARRANTIES,  INCLUDING, BUT NOT
- * LIMITED TO,  THE IMPLIED WARRANTIES OF  MERCHANTABILITY AND FITNESS
- * FOR  A  PARTICULAR  PURPOSE  ARE  DISCLAIMED.  IN  NO  EVENT  SHALL
- * THE  COPYRIGHT HOLDER  OR CONTRIBUTORS  BE LIABLE  FOR ANY  DIRECT,
- * INDIRECT, INCIDENTAL, SPECIAL,  EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO,  PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA,  OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT  LIABILITY,  OR  TORT (INCLUDING  NEGLIGENCE  OR  OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
- * OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#if !defined(URI_CONFIG_H)
-#  define URI_CONFIG_H 1
-
-#  define PACKAGE_VERSION "@PROJECT_VERSION@"
-
-#cmakedefine HAVE_WPRINTF
-#cmakedefine HAVE_REALLOCARRAY
-
-#endif /* !defined(URI_CONFIG_H) */