diff --git a/ports/xmlsec/CMakeLists.txt b/ports/xmlsec/CMakeLists.txt
index cf019d51c6..cd4398ac68 100644
--- a/ports/xmlsec/CMakeLists.txt
+++ b/ports/xmlsec/CMakeLists.txt
@@ -114,7 +114,11 @@ install(TARGETS xmlsec1 xmlsec1-openssl
     ARCHIVE DESTINATION lib
 )
 
-install(EXPORT xmlsecExport FILE xmlsec-config.cmake DESTINATION share/xmlsec)
+install(EXPORT xmlsecExport
+    FILE unofficial-xmlsec-config.cmake
+    NAMESPACE unofficial::xmlsec::
+    DESTINATION share/unofficial-xmlsec
+)
 
 if(INSTALL_HEADERS_TOOLS)
 	file(GLOB PUBLIC_HEADERS
diff --git a/ports/xmlsec/pkgconfig_fixes.patch b/ports/xmlsec/pkgconfig_fixes.patch
index c923ea5976..6e5196f598 100644
--- a/ports/xmlsec/pkgconfig_fixes.patch
+++ b/ports/xmlsec/pkgconfig_fixes.patch
@@ -15,7 +15,7 @@ index 2d5a3ad..0f72d68 100644
 @@ -7,5 +7,5 @@ Name: xmlsec1
  Version: @VERSION@
  Description: XML Security Library implements XML Signature and XML Encryption standards
- Requires: libxml-2.0 >= @LIBXML_MIN_VERSION@ @LIBXSLT_PC_FILE_COND@ 
+ Requires: libxml-2.0 >= @LIBXML_MIN_VERSION@ @LIBXSLT_PC_FILE_COND@
 -Cflags: -DXMLSEC_CRYPTO_DYNAMIC_LOADING=1 @XMLSEC_CORE_CFLAGS@
 +Cflags: @XMLSEC_CORE_CFLAGS@
- Libs: -L${libdir} @XMLSEC_CORE_LIBS@ 
+ Libs: -L${libdir} @XMLSEC_CORE_LIBS@
diff --git a/ports/xmlsec/portfile.cmake b/ports/xmlsec/portfile.cmake
index e105d409c1..a8795bde6c 100644
--- a/ports/xmlsec/portfile.cmake
+++ b/ports/xmlsec/portfile.cmake
@@ -1,14 +1,17 @@
+vcpkg_minimum_required(VERSION 2022-10-12) # for ${VERSION}
+
+string(REPLACE "." "_" release_tag "xmlsec-${VERSION}")
 vcpkg_from_github(
     OUT_SOURCE_PATH SOURCE_PATH
     REPO lsh123/xmlsec
-    REF d823da17c80b38ccc3c4262d7b2042b07e69e266 # xmlsec-1_2_34
-    SHA512 10ca5cb948723fcf1531efaab547c0665bc323cd52906decd314e0c78fff46ac7bc51eba5177838fc7f081f74f5e4a202d765c17dd0da6e378798676773a68ce
+    REF "${release_tag}"
+    SHA512 c74c0854f0afdf97651cb8ae26430a43ebb7d849b7715fdec3abcd96e61f67f0d2bac82b68b10c97dc90ee52b14ba426bbf9413f71caa7de5fa6ecb945cba0d1
     HEAD_REF master
     PATCHES 
         pkgconfig_fixes.patch
 )
 
-file(COPY ${CMAKE_CURRENT_LIST_DIR}/CMakeLists.txt DESTINATION ${SOURCE_PATH})
+file(COPY "${CMAKE_CURRENT_LIST_DIR}/CMakeLists.txt" DESTINATION "${SOURCE_PATH}")
 
 vcpkg_cmake_configure(
     SOURCE_PATH "${SOURCE_PATH}"
@@ -16,9 +19,12 @@ vcpkg_cmake_configure(
 )
 
 vcpkg_cmake_install()
-vcpkg_cmake_config_fixup()
+vcpkg_cmake_config_fixup(PACKAGE_NAME unofficial-xmlsec)
 vcpkg_fixup_pkgconfig()
-
-file(INSTALL "${SOURCE_PATH}/Copyright" DESTINATION "${CURRENT_PACKAGES_DIR}/share/${PORT}" RENAME copyright)
-
 vcpkg_copy_pdbs()
+
+# unofficial legacy usage
+file(INSTALL "${CMAKE_CURRENT_LIST_DIR}/xmlsec-config.cmake" DESTINATION "${CURRENT_PACKAGES_DIR}/share/${PORT}")
+
+file(INSTALL "${CMAKE_CURRENT_LIST_DIR}/usage" DESTINATION "${CURRENT_PACKAGES_DIR}/share/${PORT}")
+file(INSTALL "${SOURCE_PATH}/Copyright" DESTINATION "${CURRENT_PACKAGES_DIR}/share/${PORT}" RENAME copyright)
diff --git a/ports/xmlsec/usage b/ports/xmlsec/usage
new file mode 100644
index 0000000000..2192f4ae76
--- /dev/null
+++ b/ports/xmlsec/usage
@@ -0,0 +1,17 @@
+xmlsec can be imported via CMake FindPkgConfig module:
+
+    find_package(PkgConfig)
+    # For dynamic loading of xmlsec crypto library
+    pkg_check_modules(XMLSEC1 REQUIRED IMPORTED_TARGET xmlsec1)
+    target_link_libraries(main PRIVATE PkgConfig::XMLSEC1)
+    # For selecting the openssl crypto engine at link time
+    pkg_check_modules(XMLSEC1_OPENSSL REQUIRED IMPORTED_TARGET xmlsec1-openssl)
+    target_link_libraries(main PRIVATE PkgConfig::XMLSEC1_OPENSSL)
+
+vcpkg provides proprietary CMake targets:
+
+    find_package(unofficial-xmlsec CONFIG REQUIRED)
+    # For dynamic loading of xmlsec crypto library
+    target_link_libraries(main PRIVATE unofficial::xmlsec::xmlsec1)
+    # For selecting the openssl crypto engine at link time
+    target_link_libraries(main PRIVATE unofficial::xmlsec::xmlsec1-openssl)
diff --git a/ports/xmlsec/vcpkg.json b/ports/xmlsec/vcpkg.json
index c09ebc45e8..39bbc5844e 100644
--- a/ports/xmlsec/vcpkg.json
+++ b/ports/xmlsec/vcpkg.json
@@ -1,8 +1,9 @@
 {
   "name": "xmlsec",
-  "version": "1.2.34",
+  "version": "1.2.36",
   "description": "XML Security Library is a C library based on LibXML2. The library supports major XML security standards.",
   "homepage": "https://www.aleksey.com/xmlsec/",
+  "license": "X11 AND MPL-1.1",
   "dependencies": [
     "libxml2",
     "openssl",
diff --git a/ports/xmlsec/xmlsec-config.cmake b/ports/xmlsec/xmlsec-config.cmake
new file mode 100644
index 0000000000..d93c36aed1
--- /dev/null
+++ b/ports/xmlsec/xmlsec-config.cmake
@@ -0,0 +1,6 @@
+file(READ "${CMAKE_CURRENT_LIST_DIR}/usage" usage)
+message(WARNING "find_package(xmlsec) is deprecated.\n${usage}")
+include(CMakeFindDependencyMacro)
+find_dependency(unofficial-xmlsec CONFIG REQUIRED)
+add_library(xmlsec1 ALIAS unofficial::xmlsec::xmlsec1)
+add_library(xmlsec1-openssl ALIAS unofficial::xmlsec::xmlsec1-openssl)
diff --git a/versions/baseline.json b/versions/baseline.json
index ce9968955f..6fdb6ef71d 100644
--- a/versions/baseline.json
+++ b/versions/baseline.json
@@ -8089,7 +8089,7 @@
       "port-version": 1
     },
     "xmlsec": {
-      "baseline": "1.2.34",
+      "baseline": "1.2.36",
       "port-version": 0
     },
     "xnnpack": {
diff --git a/versions/x-/xmlsec.json b/versions/x-/xmlsec.json
index f9b1032eb0..cf6edc82ae 100644
--- a/versions/x-/xmlsec.json
+++ b/versions/x-/xmlsec.json
@@ -1,5 +1,10 @@
 {
   "versions": [
+    {
+      "git-tree": "3b3111c9880e6e3737f334dc37432a121a3220ef",
+      "version": "1.2.36",
+      "port-version": 0
+    },
     {
       "git-tree": "a41c14aae637b02b4e018902e0f9b67bcdef12f2",
       "version": "1.2.34",