diff --git a/modules/openapi-generator-cli/src/main/java/org/openapitools/codegen/cmd/Validate.java b/modules/openapi-generator-cli/src/main/java/org/openapitools/codegen/cmd/Validate.java
index 726aaf300d6..63ce1f6cb5d 100644
--- a/modules/openapi-generator-cli/src/main/java/org/openapitools/codegen/cmd/Validate.java
+++ b/modules/openapi-generator-cli/src/main/java/org/openapitools/codegen/cmd/Validate.java
@@ -22,9 +22,11 @@ import io.airlift.airline.Option;
 
 import io.swagger.parser.OpenAPIParser;
 import io.swagger.v3.oas.models.OpenAPI;
+import io.swagger.v3.parser.core.models.AuthorizationValue;
 import io.swagger.v3.parser.core.models.ParseOptions;
 import io.swagger.v3.parser.core.models.SwaggerParseResult;
 import org.apache.commons.text.WordUtils;
+import org.openapitools.codegen.auth.AuthParser;
 import org.openapitools.codegen.validation.ValidationResult;
 import org.openapitools.codegen.validations.oas.OpenApiEvaluator;
 import org.openapitools.codegen.validations.oas.RuleConfiguration;
@@ -44,12 +46,20 @@ public class Validate extends OpenApiGeneratorCommand {
     @Option(name = { "--recommend"}, title = "recommend spec improvements")
     private Boolean recommend;
 
+    @Option(
+            name = {"-a", "--auth"},
+            title = "authorization",
+            description = "adds authorization headers when fetching the OpenAPI definitions remotely. "
+                    + "Pass in a URL-encoded string of name:header with a comma separating multiple values")
+    private String auth;
+
     @Override
     public void execute() {
         System.out.println("Validating spec (" + spec + ")");
         ParseOptions options = new ParseOptions();
         options.setResolve(true);
-        SwaggerParseResult result = new OpenAPIParser().readLocation(spec, null, options);
+        final List<AuthorizationValue> authorizationValues = AuthParser.parse(this.auth);
+        SwaggerParseResult result = new OpenAPIParser().readLocation(spec, authorizationValues, options);
         List<String> messageList = result.getMessages();
         Set<String> errors = new HashSet<>(messageList);
         Set<String> warnings = new HashSet<>();
diff --git a/modules/openapi-generator-maven-plugin/src/main/java/org/openapitools/codegen/plugin/CodeGenMojo.java b/modules/openapi-generator-maven-plugin/src/main/java/org/openapitools/codegen/plugin/CodeGenMojo.java
index 792ca0dda2c..11112e96fa5 100644
--- a/modules/openapi-generator-maven-plugin/src/main/java/org/openapitools/codegen/plugin/CodeGenMojo.java
+++ b/modules/openapi-generator-maven-plugin/src/main/java/org/openapitools/codegen/plugin/CodeGenMojo.java
@@ -24,6 +24,7 @@ import io.swagger.v3.core.util.Json;
 import io.swagger.v3.core.util.Yaml;
 import io.swagger.v3.parser.OpenAPIResolver;
 import io.swagger.v3.parser.OpenAPIV3Parser;
+import io.swagger.v3.parser.core.models.AuthorizationValue;
 import io.swagger.v3.parser.core.models.ParseOptions;
 import lombok.Setter;
 import org.apache.commons.io.FileUtils;
@@ -37,6 +38,7 @@ import org.apache.maven.plugins.annotations.*;
 import org.apache.maven.project.MavenProject;
 import org.apache.maven.project.MavenProjectHelper;
 import org.openapitools.codegen.*;
+import org.openapitools.codegen.auth.AuthParser;
 import org.openapitools.codegen.config.CodegenConfigurator;
 import org.openapitools.codegen.config.GlobalSettings;
 import org.openapitools.codegen.config.MergedSpecBuilder;
@@ -1002,8 +1004,10 @@ public class CodeGenMojo extends AbstractMojo {
         parseOptions.setResolve(true);
         
         final URL remoteUrl = inputSpecRemoteUrl();
+        final List<AuthorizationValue> authorizationValues = AuthParser.parse(this.auth);
+
         return Hashing.sha256().hashBytes(
-            new OpenAPIParser().readLocation(remoteUrl == null ? inputSpec : remoteUrl.toString(), null, parseOptions)
+            new OpenAPIParser().readLocation(remoteUrl == null ? inputSpec : remoteUrl.toString(), authorizationValues, parseOptions)
                 .getOpenAPI().toString().getBytes(StandardCharsets.UTF_8)
         ).toString();
     }
@@ -1089,7 +1093,9 @@ public class CodeGenMojo extends AbstractMojo {
         // Merge the OpenAPI spec file.
         final var parseOptions = new ParseOptions();
         parseOptions.setResolve(true);
-        final var openApiMerged = new OpenAPIResolver(new OpenAPIV3Parser().readLocation(inputSpec, null, parseOptions).getOpenAPI()).resolve();
+        final List<AuthorizationValue> authorizationValues = AuthParser.parse(this.auth);
+
+        final var openApiMerged = new OpenAPIResolver(new OpenAPIV3Parser().readLocation(inputSpec, authorizationValues, parseOptions).getOpenAPI()).resolve();
 
         // Switch based on JSON or YAML.
         final var extension = inputSpec.toLowerCase(Locale.ROOT).endsWith(".json") ? ".json" : ".yaml";