nodejs · panva · Apr 18, 2026 · Apr 18, 2026 · Apr 18, 2026 · Apr 18, 2026
diff --git a/.github/workflows/test-shared-openssl.yml b/.github/workflows/test-shared-openssl.yml
@@ -0,0 +1,123 @@
+# Throwaway workflow used solely to gather test results for Node.js
+# linked against OpenSSL 3.5, 3.6, and 4.0.
+name: TEMP - Test Shared libraries (OpenSSL)
+
+on:
+  pull_request:
+  push:
+    branches:
+      - tmp-openssl4
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
+env:
+  FLAKY_TESTS: keep_retrying
+
+permissions:
+  contents: read
+
+jobs:
+  build-tarball:
+    name: Build slim tarball
+    runs-on: ubuntu-slim
+    steps:
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd  # v6.0.2
+        with:
+          persist-credentials: false
+
+      - name: Make tarball
+        run: |
+          export DATESTRING=$(date "+%Y-%m-%d")
+          export COMMIT=$(git rev-parse --short=10 "$GITHUB_SHA")
+          ./configure && make tar -j4 SKIP_XZ=1 SKIP_SHARED_DEPS=1
+        env:
+          DISTTYPE: nightly
+
+      - name: Upload tarball artifact
+        uses: actions/upload-artifact@bbbca2ddaa5d8feaa63e36b76fdaad77386f024f  # v7.0.0
+        with:
+          name: tarballs
+          path: '*.tar.gz'
+          compression-level: 0
+
+  build:
+    needs: build-tarball
+    strategy:
+      fail-fast: false
+      matrix:
+        opensslPkg:
+          - openssl_1_1
+          - openssl_3
+          - openssl_3_5
+          - openssl_3_6
+          - openssl_4_0
+        system:
+          - x86_64-linux
+          - aarch64-linux
+          - x86_64-darwin
+          - aarch64-darwin
+        include:
+          - system: x86_64-linux
+            runner: ubuntu-24.04
+          - system: aarch64-linux
+            runner: ubuntu-24.04-arm
+          - system: x86_64-darwin
+            runner: macos-15-intel
+          - system: aarch64-darwin
+            runner: macos-latest
+    name: '${{ matrix.system }}: with shared libraries (${{ matrix.opensslPkg }})'
+    runs-on: ${{ matrix.runner }}
+    # We only care about the test results here, not about gating anything.
+    continue-on-error: true
+    steps:
+      - uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c  # v8.0.1
+        with:
+          name: tarballs
+          path: tarballs
+
+      - name: Extract tarball
+        run: |
+          tar xzf tarballs/*.tar.gz -C "$RUNNER_TEMP"
+          echo "TAR_DIR=$RUNNER_TEMP/$(basename tarballs/*.tar.gz .tar.gz)" >> "$GITHUB_ENV"
+
+      - uses: cachix/install-nix-action@96951a368ba55167b55f1c916f7d416bac6505fe  # v31.10.3
+        with:
+          extra_nix_config: sandbox = true
+
+      - uses: cachix/cachix-action@1eb2ef646ac0255473d23a5907ad7b04ce94065c  # v17
+        with:
+          name: nodejs
+          authToken: ${{ secrets.CACHIX_AUTH_TOKEN }}
+
+      - name: Configure sccache
+        uses: actions/github-script@ed597411d8f924073f98dfc5c65a23a2325f34cd  # v8.0.0
+        with:
+          script: |
+            core.exportVariable('SCCACHE_GHA_ENABLED', 'on');
+            core.exportVariable('ACTIONS_CACHE_SERVICE_V2', 'on');
+            core.exportVariable('ACTIONS_RESULTS_URL', process.env.ACTIONS_RESULTS_URL || '');
+            core.exportVariable('ACTIONS_RUNTIME_TOKEN', process.env.ACTIONS_RUNTIME_TOKEN || '');
+            core.exportVariable('NIX_SCCACHE', '(import <nixpkgs> {}).sccache');
+
+      - name: Build Node.js and run tests
+        env:
+          # Allow evaluating packages marked insecure in nixpkgs (e.g. openssl_1_1).
+          NIXPKGS_ALLOW_INSECURE: '1'
+        run: |
+          nix-shell \
+            -I "nixpkgs=$TAR_DIR/tools/nix/pkgs.nix" \
+            --impure \
+            --pure --keep TAR_DIR --keep FLAKY_TESTS --keep NIXPKGS_ALLOW_INSECURE \
+            --keep SCCACHE_GHA_ENABLED --keep ACTIONS_CACHE_SERVICE_V2 --keep ACTIONS_RESULTS_URL --keep ACTIONS_RUNTIME_TOKEN \
+            --arg loadJSBuiltinsDynamically false \
+            --arg useSeparateDerivationForV8 true \
+            --arg ccache "${NIX_SCCACHE:-null}" \
+            --arg devTools '[]' \
+            --arg benchmarkTools '[]' \
+            --arg opensslPkg '(import <nixpkgs> {}).${{ matrix.opensslPkg }}' \
+            ${{ endsWith(matrix.system, '-darwin') && '--arg withAmaro false --arg withLief false --arg withSQLite false --arg withFFI false --arg extraConfigFlags ''["--without-inspector" "--without-node-options"]'' \' || '\' }}
+            --run '
+                make -C "$TAR_DIR" run-ci -j4 V=1 TEST_CI_ARGS="-p actions --measure-flakiness 9 --skip-tests=$CI_SKIP_TESTS"
+            ' "$TAR_DIR/shell.nix"
diff --git a/shell.nix b/shell.nix
@@ -19,6 +19,7 @@
   withFFI ? true,
   withSSL ? true,
   withTemporal ? false,
+  opensslPkg ? pkgs.openssl_3_5,
   sharedLibDeps ? (
     import ./tools/nix/sharedLibDeps.nix {
       inherit
@@ -29,6 +30,7 @@
         withFFI
         withSSL
         withTemporal
+        opensslPkg
         ;
     }
   ),

diff --git a/test/addons/openssl-binding/binding.cc b/test/addons/openssl-binding/binding.cc
@@ -46,7 +46,7 @@ inline void Initialize(v8::Local<v8::Object> exports,
                    .ToLocalChecked();
   assert(exports->Set(context, key, value).IsJust());
 
-  const SSL_METHOD* method = TLSv1_2_server_method();
+  const SSL_METHOD* method = TLS_server_method();
   assert(method != nullptr);
 
   key = v8::String::NewFromUtf8(isolate, "hash").ToLocalChecked();

diff --git a/test/parallel/test-crypto-dh-stateless.js b/test/parallel/test-crypto-dh-stateless.js
@@ -7,6 +7,22 @@ const assert = require('assert');
 const crypto = require('crypto');
 const { hasOpenSSL } = require('../common/crypto');
 
+// Error code for a key-type mismatch during ECDH/EdDH derivation. The
+// underlying OpenSSL error code varies by version (and in OpenSSL 4.0, by
+// platform: some builds report a generic internal error instead
+// of a typed key-type mismatch).
+// TODO(panva): report the OpenSSL 4.0 generic internal error behavior
+// upstream and tighten this check once fixed.
+let keyTypeMismatchCode;
+if (hasOpenSSL(4, 0)) {
+  keyTypeMismatchCode =
+    /^ERR_OSSL_EVP_(OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE|INTERNAL_ERROR)$/;
+} else if (hasOpenSSL(3)) {
+  keyTypeMismatchCode = 'ERR_OSSL_EVP_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE';
+} else {
+  keyTypeMismatchCode = 'ERR_OSSL_EVP_DIFFERENT_KEY_TYPES';
+}
+
 assert.throws(() => crypto.diffieHellman(), {
   name: 'TypeError',
   code: 'ERR_INVALID_ARG_TYPE',
@@ -397,9 +413,7 @@ test(crypto.generateKeyPairSync('x25519'),
     privateKey: crypto.generateKeyPairSync('x448').privateKey,
     publicKey: crypto.generateKeyPairSync('x25519').publicKey,
   };
-  testDHError(options, { code: hasOpenSSL(3) ?
-    'ERR_OSSL_EVP_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE' :
-    'ERR_OSSL_EVP_DIFFERENT_KEY_TYPES' });
+  testDHError(options, { code: keyTypeMismatchCode });
 }
 
 // Test all key encoding formats
@@ -541,23 +555,21 @@ for (const { privateKey: alicePriv, publicKey: bobPub } of [
     testDHError({
       privateKey: privKey(ec256.privateKey),
       publicKey: pubKey(x25519.publicKey),
-    }, { code: hasOpenSSL(3) ?
-      'ERR_OSSL_EVP_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE' :
-      'ERR_OSSL_EVP_DIFFERENT_KEY_TYPES' });
+    }, { code: keyTypeMismatchCode });
 
     // Unsupported key type (ed25519)
     testDHError({
       privateKey: privKey(ed25519.privateKey),
       publicKey: pubKey(ed25519.publicKey),
-    }, { code: 'ERR_OSSL_EVP_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE' });
+    }, { code: hasOpenSSL(4, 0) ?
+      /^ERR_OSSL_EVP_(OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE|INTERNAL_ERROR)$/ :
+      'ERR_OSSL_EVP_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE' });
 
     // Incompatible key types (x448 + x25519)
     testDHError({
       privateKey: privKey(x448.privateKey),
       publicKey: pubKey(x25519.publicKey),
-    }, { code: hasOpenSSL(3) ?
-      'ERR_OSSL_EVP_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE' :
-      'ERR_OSSL_EVP_DIFFERENT_KEY_TYPES' });
+    }, { code: keyTypeMismatchCode });
 
     // Zero x25519 public key
     testDHError({

diff --git a/test/parallel/test-tls-alert-handling.js b/test/parallel/test-tls-alert-handling.js
@@ -97,11 +97,11 @@ function sendBADTLSRecord() {
     // Different OpenSSL versions send different TLS alerts when the peer
     // receives an invalid record on an established connection.
     assert.match(err.code,
-                 /ERR_SSL_(TLSV1_ALERT_PROTOCOL_VERSION|TLSV1_ALERT_RECORD_OVERFLOW|SSL\/TLS_ALERT_UNEXPECTED_MESSAGE)/);
+                 /ERR_SSL_(TLSV1_ALERT_PROTOCOL_VERSION|TLSV1_ALERT_RECORD_OVERFLOW|(SSL\/)?TLS_ALERT_UNEXPECTED_MESSAGE)/);
     assert.strictEqual(err.library, 'SSL routines');
     if (!hasOpenSSL3 && !process.features.openssl_is_boringssl)
       assert.strictEqual(err.function, 'ssl3_read_bytes');
     assert.match(err.reason,
-                 /tlsv1[\s_]alert[\s_]protocol[\s_]version|tlsv1[\s_]alert[\s_]record[\s_]overflow|ssl\/tls[\s_]alert[\s_]unexpected[\s_]message/i);
+                 /tlsv1[\s_]alert[\s_]protocol[\s_]version|tlsv1[\s_]alert[\s_]record[\s_]overflow|(ssl\/)?tls[\s_]alert[\s_]unexpected[\s_]message/i);
   }));
 }
diff --git a/test/parallel/test-tls-client-getephemeralkeyinfo.js b/test/parallel/test-tls-client-getephemeralkeyinfo.js
@@ -70,7 +70,10 @@ function test(size, type, name, cipher) {
 
 test(undefined, undefined, undefined, 'AES256-SHA256');
 test('auto', 'DH', undefined, 'DHE-RSA-AES256-GCM-SHA384');
-if (!hasOpenSSL(3, 2)) {
+if (hasOpenSSL(4, 0)) {
+  // OpenSSL 4.0 implements RFC 7919 FFDHE negotiation for TLS 1.2 and
+  // always selects FFDHE-2048 regardless of the server-supplied dhparam.
+} else if (!hasOpenSSL(3, 2)) {
   test(1024, 'DH', undefined, 'DHE-RSA-AES256-GCM-SHA384');
 } else {
   test(3072, 'DH', undefined, 'DHE-RSA-AES256-GCM-SHA384');

diff --git a/test/parallel/test-tls-client-mindhsize.js b/test/parallel/test-tls-client-mindhsize.js
@@ -13,6 +13,7 @@ const secLevel = require('internal/crypto/util').getOpenSSLSecLevel();
 const assert = require('assert');
 const tls = require('tls');
 const fixtures = require('../common/fixtures');
+const { hasOpenSSL } = require('../common/crypto');
 
 const key = fixtures.readKey('agent2-key.pem');
 const cert = fixtures.readKey('agent2-cert.pem');
@@ -24,7 +25,7 @@ function loadDHParam(n) {
   return fixtures.readKey(`dh${n}.pem`);
 }
 
-function test(size, err, next) {
+function test(size, err, next, minDHSizeOverride) {
   const options = {
     key: key,
     cert: cert,
@@ -46,7 +47,7 @@ function test(size, err, next) {
     // so that it fails when it makes a connection to the tls
     // server where is too small. This depends on the openssl
     // security level
-    const minDHSize = (secLevel > 1) ? 3072 : 2048;
+    const minDHSize = minDHSizeOverride ?? ((secLevel > 1) ? 3072 : 2048);
     const client = tls.connect({
       minDHSize: minDHSize,
       port: this.address().port,
@@ -84,7 +85,12 @@ function testDHE3072() {
   test(3072, false, null);
 }
 
-if (secLevel > 1) {
+if (hasOpenSSL(4, 0)) {
+  // OpenSSL 4.0 implements RFC 7919 FFDHE negotiation for TLS 1.2 and
+  // ignores the server-supplied dhparam in favor of FFDHE-2048. The 3072
+  // success case is therefore replaced by a 2048 success case.
+  testDHE2048(true, () => test(2048, false, null, 2048));
+} else if (secLevel > 1) {
   // Minimum size for OpenSSL security level 2 and above is 2048 by default
   testDHE2048(true, testDHE3072);
 } else {

diff --git a/test/parallel/test-tls-dhe.js b/test/parallel/test-tls-dhe.js
@@ -28,6 +28,7 @@ if (!common.hasCrypto) {
 
 const {
   opensslCli,
+  hasOpenSSL,
 } = require('../common/crypto');
 
 // OpenSSL has a set of security levels which affect what algorithms
@@ -104,9 +105,15 @@ function testCustomParam(keylen, expectedCipher) {
 }
 
 (async () => {
-  // By default, DHE is disabled while ECDHE is enabled.
+  // By default, DHE is disabled while ECDHE is enabled. OpenSSL 4.0
+  // implements RFC 7919 FFDHE negotiation for TLS 1.2 which enables DHE
+  // (with FFDHE-2048) even without a server-supplied dhparam.
   for (const dhparam of [undefined, null]) {
-    await test(dhparam, null, ecdheCipher);
+    if (hasOpenSSL(4, 0)) {
+      await test(dhparam, 2048, dheCipher);
+    } else {
+      await test(dhparam, null, ecdheCipher);
+    }
   }
 
   // The DHE parameters selected by OpenSSL depend on the strength of the
@@ -124,14 +131,24 @@ function testCustomParam(keylen, expectedCipher) {
 
   // Custom DHE parameters are supported (but discouraged).
   // 1024 is disallowed at security level 2 and above so use 3072 instead
-  // for higher security levels
+  // for higher security levels.
+  // OpenSSL 4.0 implements RFC 7919 FFDHE negotiation for TLS 1.2 and
+  // ignores the server-supplied dhparam in favor of FFDHE-2048, so the
+  // negotiated key length is always 2048.
   if (secLevel < 2) {
     await testCustomParam(1024, dheCipher);
+  } else if (hasOpenSSL(4, 0)) {
+    await test(loadDHParam(3072), 2048, dheCipher);
   } else {
     await testCustomParam(3072, dheCipher);
   }
   await testCustomParam(2048, dheCipher);
 
-  // Invalid DHE parameters are discarded. ECDHE remains enabled.
-  await testCustomParam('error', ecdheCipher);
+  // Invalid DHE parameters are discarded. Prior to OpenSSL 4.0 this
+  // disabled DHE and ECDHE was negotiated; since 4.0, FFDHE-2048 is used.
+  if (hasOpenSSL(4, 0)) {
+    await test(loadDHParam('error'), 2048, dheCipher);
+  } else {
+    await testCustomParam('error', ecdheCipher);
+  }
 })().then(common.mustCall());
diff --git a/test/parallel/test-tls-ecdh-multiple.js b/test/parallel/test-tls-ecdh-multiple.js
@@ -8,7 +8,7 @@ if (!common.hasCrypto) {
   common.skip('missing crypto');
 }
 
-const { opensslCli } = require('../common/crypto');
+const { opensslCli, hasOpenSSL } = require('../common/crypto');
 const crypto = require('crypto');
 
 if (!opensslCli) {
@@ -24,11 +24,17 @@ function loadPEM(n) {
   return fixtures.readKey(`${n}.pem`);
 }
 
+// OpenSSL 4.0 disables support for deprecated elliptic curves from RFC 8422
+// (including secp256k1) by default.
+const ecdhCurve = hasOpenSSL(4, 0) ?
+  'prime256v1:secp521r1' :
+  'secp256k1:prime256v1:secp521r1';
+
 const options = {
   key: loadPEM('agent2-key'),
   cert: loadPEM('agent2-cert'),
   ciphers: '-ALL:ECDHE-RSA-AES128-SHA256',
-  ecdhCurve: 'secp256k1:prime256v1:secp521r1',
+  ecdhCurve,
   maxVersion: 'TLSv1.2',
 };
 
@@ -60,6 +66,11 @@ const server = tls.createServer(options, (conn) => {
     unsupportedCurves.push('brainpoolP256r1');
   }
 
+  // Deprecated RFC 8422 curves are disabled by default in OpenSSL 4.0.
+  if (hasOpenSSL(4, 0)) {
+    unsupportedCurves.push('secp256k1');
+  }
+
   unsupportedCurves.forEach((ecdhCurve) => {
     assert.throws(() => tls.createServer({ ecdhCurve }),
                   /Error: Failed to set ECDH curve/);

diff --git a/test/parallel/test-tls-error-stack.js b/test/parallel/test-tls-error-stack.js
@@ -11,6 +11,9 @@ const tls = require('tls');
 assert.throws(() => {
   tls.createSecureContext({ clientCertEngine: 'x' });
 }, (err) => {
+  if (err.code === 'ERR_CRYPTO_CUSTOM_ENGINE_NOT_SUPPORTED')
+    common.skip('OpenSSL dropped engine support');
+
   return err.name === 'Error' &&
          /could not load the shared library/.test(err.message) &&
          Array.isArray(err.opensslErrorStack) &&