https://github.com/python/cpython/commit/f1be67fc596f741077a836fc0e943f52f85a0506
commit: f1be67fc596f741077a836fc0e943f52f85a0506
branch: 3.15
author: Miss Islington (bot) <[email protected]>
committer: hugovk <[email protected]>
date: 2026-08-28T22:09:40+03:00
summary:

[3.15] gh-156369: Update Windows builds to OpenSSL 3.5.8 (GH-156528) (#156530)

gh-156369: Update Windows builds to OpenSSL 3.5.8 (GH-156528)
(cherry picked from commit b7ce9c3f1ac1f57bd7bc95aaed91e78548d98c88)

Co-authored-by: Zachary Ware <[email protected]>

files:
A Misc/NEWS.d/next/Windows/2026-08-28-10-51-35.gh-issue-156369.MPcRL5.rst
M Misc/externals.spdx.json
M PCbuild/get_externals.bat
M PCbuild/python.props

diff --git 
a/Misc/NEWS.d/next/Windows/2026-08-28-10-51-35.gh-issue-156369.MPcRL5.rst 
b/Misc/NEWS.d/next/Windows/2026-08-28-10-51-35.gh-issue-156369.MPcRL5.rst
new file mode 100644
index 000000000000000..33c02132cfdaaef
--- /dev/null
+++ b/Misc/NEWS.d/next/Windows/2026-08-28-10-51-35.gh-issue-156369.MPcRL5.rst
@@ -0,0 +1 @@
+Updated Windows builds to use OpenSSL 3.5.8.
diff --git a/Misc/externals.spdx.json b/Misc/externals.spdx.json
index cdacaf6f5869531..e37693d6e4cdea2 100644
--- a/Misc/externals.spdx.json
+++ b/Misc/externals.spdx.json
@@ -70,21 +70,21 @@
       "checksums": [
         {
           "algorithm": "SHA256",
-          "checksumValue": 
"ca94e7c6c223d9caf77bb51aac5949186379608ea2a0cad3aa8bdf31856912e9"
+          "checksumValue": 
"36af13403a6f34251c875946d1d524c228cbf7b82fd54dd13d9019fbc37da87e"
         }
       ],
-      "downloadLocation": 
"https://github.com/python/cpython-source-deps/archive/refs/tags/openssl-3.5.7.tar.gz";,
+      "downloadLocation": 
"https://github.com/python/cpython-source-deps/archive/refs/tags/openssl-3.5.8.tar.gz";,
       "externalRefs": [
         {
           "referenceCategory": "SECURITY",
-          "referenceLocator": "cpe:2.3:a:openssl:openssl:3.5.7:*:*:*:*:*:*:*",
+          "referenceLocator": "cpe:2.3:a:openssl:openssl:3.5.8:*:*:*:*:*:*:*",
           "referenceType": "cpe23Type"
         }
       ],
       "licenseConcluded": "NOASSERTION",
       "name": "openssl",
       "primaryPackagePurpose": "SOURCE",
-      "versionInfo": "3.5.7"
+      "versionInfo": "3.5.8"
     },
     {
       "SPDXID": "SPDXRef-PACKAGE-sqlite",
diff --git a/PCbuild/get_externals.bat b/PCbuild/get_externals.bat
index 6bedd21299a73e9..dd682da753dd380 100644
--- a/PCbuild/get_externals.bat
+++ b/PCbuild/get_externals.bat
@@ -54,7 +54,7 @@ echo.Fetching external libraries...
 set libraries=
 set libraries=%libraries%                                       bzip2-1.0.8
 if NOT "%IncludeLibffiSrc%"=="false" set libraries=%libraries%  libffi-3.4.4
-if NOT "%IncludeSSLSrc%"=="false" set libraries=%libraries%     openssl-3.5.7
+if NOT "%IncludeSSLSrc%"=="false" set libraries=%libraries%     openssl-3.5.8
 set libraries=%libraries%                                       mpdecimal-4.0.0
 set libraries=%libraries%                                       sqlite-3.53.2.0
 if NOT "%IncludeTkinterSrc%"=="false" set libraries=%libraries% tcl-9.0.4.0
@@ -79,7 +79,7 @@ echo.Fetching external binaries...
 
 set binaries=
 if NOT "%IncludeLibffi%"=="false"  set binaries=%binaries% libffi-3.4.4
-if NOT "%IncludeSSL%"=="false"     set binaries=%binaries% openssl-bin-3.5.7
+if NOT "%IncludeSSL%"=="false"     set binaries=%binaries% openssl-bin-3.5.8
 if NOT "%IncludeTkinter%"=="false" set binaries=%binaries% tcltk-9.0.4.0
 if NOT "%IncludeSSLSrc%"=="false"  set binaries=%binaries% nasm-2.11.06
 if NOT "%IncludeLLVM%"=="false"    set binaries=%binaries% llvm-21.1.4.0
diff --git a/PCbuild/python.props b/PCbuild/python.props
index 8d931bba28a389a..79f705a1ed3cda5 100644
--- a/PCbuild/python.props
+++ b/PCbuild/python.props
@@ -105,8 +105,8 @@
     <libffiOutDir Condition="$(libffiOutDir) == 
''">$(libffiDir)$(ArchName)\</libffiOutDir>
     <libffiIncludeDir Condition="$(libffiIncludeDir) == 
''">$(libffiOutDir)include</libffiIncludeDir>
     <mpdecimalDir Condition="$(mpdecimalDir) == 
''">$(ExternalsDir)\mpdecimal-4.0.0\</mpdecimalDir>
-    <opensslDir Condition="$(opensslDir) == 
''">$(ExternalsDir)openssl-3.5.7\</opensslDir>
-    <opensslOutDir Condition="$(opensslOutDir) == 
''">$(ExternalsDir)openssl-bin-3.5.7\$(ArchName)\</opensslOutDir>
+    <opensslDir Condition="$(opensslDir) == 
''">$(ExternalsDir)openssl-3.5.8\</opensslDir>
+    <opensslOutDir Condition="$(opensslOutDir) == 
''">$(ExternalsDir)openssl-bin-3.5.8\$(ArchName)\</opensslOutDir>
     <opensslIncludeDir Condition="$(opensslIncludeDir) == 
''">$(opensslOutDir)include</opensslIncludeDir>
     <nasmDir Condition="$(nasmDir) == 
''">$(ExternalsDir)\nasm-2.11.06\</nasmDir>
     <zlibDir Condition="$(zlibDir) == ''">$(ExternalsDir)\zlib-1.3.1\</zlibDir>

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