From 7939cc9514935239f9bac429a7770154673dd60f Mon Sep 17 00:00:00 2001
From: Brian Popow <popow@gmx.de>
Date: Sun, 29 Mar 2026 19:31:33 +0200
Subject: [PATCH] Throw InvalidImageContentException when requiered header
 fields are missing

---
 src/ImageSharp/Formats/Exr/ExrDecoderCore.cs | 35 ++++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/src/ImageSharp/Formats/Exr/ExrDecoderCore.cs b/src/ImageSharp/Formats/Exr/ExrDecoderCore.cs
index 8a893c3c83..126c4c8f69 100644
--- a/src/ImageSharp/Formats/Exr/ExrDecoderCore.cs
+++ b/src/ImageSharp/Formats/Exr/ExrDecoderCore.cs
@@ -562,6 +562,41 @@ internal sealed class ExrDecoderCore : ImageDecoderCore
             attribute = this.ReadAttribute(stream);
         }
 
+        if (!displayWindow.HasValue)
+        {
+            ExrThrowHelper.ThrowInvalidImageContentException("Invalid exr image header, the displayWindow attribute is missing!");
+        }
+
+        if (!dataWindow.HasValue)
+        {
+            ExrThrowHelper.ThrowInvalidImageContentException("Invalid exr image header, the dataWindow attribute is missing!");
+        }
+
+        if (channels is null)
+        {
+            ExrThrowHelper.ThrowInvalidImageContentException("Invalid exr image header, the channels attribute is missing!");
+        }
+
+        if (!compression.HasValue)
+        {
+            ExrThrowHelper.ThrowInvalidImageContentException("Invalid exr image header, the compression attribute is missing!");
+        }
+
+        if (!lineOrder.HasValue)
+        {
+            ExrThrowHelper.ThrowInvalidImageContentException("Invalid exr image header, the lineOrder attribute is missing!");
+        }
+
+        if (!screenWindowWidth.HasValue)
+        {
+            ExrThrowHelper.ThrowInvalidImageContentException("Invalid exr image header, the screenWindowWidth attribute is missing!");
+        }
+
+        if (!screenWindowCenterX.HasValue || !screenWindowCenterY.HasValue)
+        {
+            ExrThrowHelper.ThrowInvalidImageContentException("Invalid exr image header, the screenWindowCenter attribute is missing!");
+        }
+
         ExrHeaderAttributes header = new(
             channels,
             compression.Value,