From 1ddd782ccc0ff571d284537600c97bd1050b9aa9 Mon Sep 17 00:00:00 2001
From: Niklas Krebs <niki.krebs@web.de>
Date: Thu, 10 Oct 2024 19:31:30 +0200
Subject: [PATCH] Fix bug that causes the configuration version to go out of
 enum bound when reading from environment.

---
 .../Configurations/DefaultOpenApiConfigurationOptions.cs     | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/Microsoft.Azure.WebJobs.Extensions.OpenApi.Core/Configurations/DefaultOpenApiConfigurationOptions.cs b/src/Microsoft.Azure.WebJobs.Extensions.OpenApi.Core/Configurations/DefaultOpenApiConfigurationOptions.cs
index 15d1249c..c1fd1f69 100644
--- a/src/Microsoft.Azure.WebJobs.Extensions.OpenApi.Core/Configurations/DefaultOpenApiConfigurationOptions.cs
+++ b/src/Microsoft.Azure.WebJobs.Extensions.OpenApi.Core/Configurations/DefaultOpenApiConfigurationOptions.cs
@@ -112,8 +112,9 @@ public static List<OpenApiServer> GetHostNames()
         /// <returns>Returns the OpenAPI version.</returns>
         public static OpenApiVersionType GetOpenApiVersion()
         {
-            var version = Enum.TryParse<OpenApiVersionType>(
-                              Environment.GetEnvironmentVariable(OpenApiVersionKey), ignoreCase: true, out var result)
+            var version = Enum.TryParse<OpenApiVersionType>(Environment.GetEnvironmentVariable(OpenApiVersionKey),
+                              ignoreCase: true, out var result)
+                          && Enum.IsDefined(typeof(OpenApiVersionType), result)
                             ? result
                             : DefaultOpenApiVersion();