diff --git a/src/bun.js/api/JSTranspiler.zig b/src/bun.js/api/JSTranspiler.zig
index 074a47e1558..fad25b92439 100644
--- a/src/bun.js/api/JSTranspiler.zig
+++ b/src/bun.js/api/JSTranspiler.zig
@@ -504,6 +504,10 @@ pub const TransformTask = struct {
         this.transpiler.setLog(&this.log);
         this.log.msgs.allocator = bun.default_allocator;
 
+        defer for (this.log.msgs.items) |*msg| {
+            msg.* = bun.handleOom(msg.clone(bun.default_allocator));
+        };
+
         const jsx = if (this.tsconfig != null)
             this.tsconfig.?.mergeJSX(this.transpiler.options.jsx)
         else
@@ -587,6 +591,7 @@ pub const TransformTask = struct {
     }
 
     pub fn deinit(this: *TransformTask) void {
+        for (this.log.msgs.items) |*msg| msg.deinit(bun.default_allocator);
         this.log.deinit();
         this.input_code.deinitAndUnprotect();
         this.output_code.deref();
diff --git a/test/js/bun/transpiler/transpiler-transform-error-uaf.test.ts b/test/js/bun/transpiler/transpiler-transform-error-uaf.test.ts
new file mode 100644
index 00000000000..2cb5c4f827c
--- /dev/null
+++ b/test/js/bun/transpiler/transpiler-transform-error-uaf.test.ts
@@ -0,0 +1,29 @@
+import { expect, test } from "bun:test";
+
+test("concurrent async transform() with parse errors produces correct error messages", async () => {
+  const transpiler = new Bun.Transpiler();
+
+  const promises: Promise<unknown>[] = [];
+  for (let i = 0; i < 100; i++) {
+    promises.push(transpiler.transform("const x = ;", "js").catch(e => e));
+  }
+
+  const errors = await Promise.all(promises);
+  for (const err of errors) {
+    expect(String(err)).toContain("Unexpected");
+  }
+});
+
+test("concurrent async transform() with redeclaration errors produces correct error messages", async () => {
+  const transpiler = new Bun.Transpiler();
+
+  const promises: Promise<unknown>[] = [];
+  for (let i = 0; i < 100; i++) {
+    promises.push(transpiler.transform("const x = 1; const x = 2;", "js").catch(e => e));
+  }
+
+  const errors = await Promise.all(promises);
+  for (const err of errors) {
+    expect(String(err)).toContain(`"x"`);
+  }
+});