Fix for GHSA-rvv3-g6hj-g44x (#5)

kant2002 · web-flow · commit 2c53bf4d415e · 2026-03-17T13:48:38.000+01:00
diff --git a/src/AutoMapper/Execution/TypeMapPlanBuilder.cs b/src/AutoMapper/Execution/TypeMapPlanBuilder.cs
@@ -1,6 +1,7 @@
 namespace AutoMapper.Execution;
 public ref struct TypeMapPlanBuilder(IGlobalConfiguration configuration, TypeMap typeMap)
 {
+    const int DefaultMaxDepth = 64;
     static readonly MethodInfo MappingError = typeof(TypeMapPlanBuilder).GetStaticMethod(nameof(MemberMappingError));
     static readonly MethodInfo IncTypeDepthInfo = typeof(ResolutionContext).GetInstanceMethod(nameof(ResolutionContext.IncrementTypeDepth));
     static readonly MethodInfo DecTypeDepthInfo = typeof(ResolutionContext).GetInstanceMethod(nameof(ResolutionContext.DecrementTypeDepth));
@@ -106,6 +107,10 @@ private static void CheckForCycles(IGlobalConfiguration configuration, TypeMap t
                     continue;
                 }
                 memberTypeMap.PreserveReferences = true;
+                if (memberTypeMap.MaxDepth == 0)
+                {
+                    memberTypeMap.MaxDepth = DefaultMaxDepth;
+                }
                 Trace(typeMap, memberTypeMap, memberMap);
                 if (memberMap.Inline)
                 {

Original file line number	Diff line number	Diff line change
`@@ -1,6 +1,7 @@`
`1`	`1`	`namespace AutoMapper.Execution;`
`2`	`2`	`public ref struct TypeMapPlanBuilder(IGlobalConfiguration configuration, TypeMap typeMap)`
`3`	`3`	`{`
	`4`	`+ const int DefaultMaxDepth = 64;`
`4`	`5`	`static readonly MethodInfo MappingError = typeof(TypeMapPlanBuilder).GetStaticMethod(nameof(MemberMappingError));`
`5`	`6`	`static readonly MethodInfo IncTypeDepthInfo = typeof(ResolutionContext).GetInstanceMethod(nameof(ResolutionContext.IncrementTypeDepth));`
`6`	`7`	`static readonly MethodInfo DecTypeDepthInfo = typeof(ResolutionContext).GetInstanceMethod(nameof(ResolutionContext.DecrementTypeDepth));`
`@@ -106,6 +107,10 @@ private static void CheckForCycles(IGlobalConfiguration configuration, TypeMap t`
`106`	`107`	`continue;`
`107`	`108`	`}`
`108`	`109`	`memberTypeMap.PreserveReferences = true;`
	`110`	`+ if (memberTypeMap.MaxDepth == 0)`
	`111`	`+ {`
	`112`	`+ memberTypeMap.MaxDepth = DefaultMaxDepth;`
	`113`	`+ }`
`109`	`114`	`Trace(typeMap, memberTypeMap, memberMap);`
`110`	`115`	`if (memberMap.Inline)`
`111`	`116`	`{`