diff --git a/extensions/chutes/oauth.test.ts b/extensions/chutes/oauth.test.ts
index 28aaf6daf942..29ec201c46b1 100644
--- a/extensions/chutes/oauth.test.ts
+++ b/extensions/chutes/oauth.test.ts
@@ -270,6 +270,47 @@ describe("chutes plugin OAuth", () => {
     expect(timeoutSpy).toHaveBeenCalledTimes(2);
   });
 
+  it("cancels the userinfo error response body when profile lookup fails", async () => {
+    let canceled = false;
+    let bytesPulled = 0;
+    const userInfoResponse = new Response(
+      new ReadableStream<Uint8Array>({
+        pull(controller) {
+          if (bytesPulled > 0) {
+            controller.close();
+            return;
+          }
+          bytesPulled += 1;
+          controller.enqueue(new TextEncoder().encode("temporarily unavailable"));
+        },
+        cancel() {
+          canceled = true;
+        },
+      }),
+      { status: 503 },
+    );
+    const fetchFn = vi.fn(async (input: RequestInfo | URL) => {
+      const url = fetchInputUrl(input);
+      if (url === CHUTES_TOKEN_ENDPOINT) {
+        return new Response(
+          '{"access_token":"at_123","refresh_token":"rt_123","expires_in":3600}',
+          { status: 200, headers: { "Content-Type": "application/json" } },
+        );
+      }
+      if (url === CHUTES_USERINFO_ENDPOINT) {
+        return userInfoResponse;
+      }
+      return new Response("not found", { status: 404 });
+    });
+
+    const credentials = await loginWithFetch(fetchFn);
+
+    expect(canceled).toBe(true);
+    expect(credentials.access).toBe("at_123");
+    expect(credentials.email).toBeUndefined();
+    expect(credentials.accountId).toBeUndefined();
+  });
+
   it("cancels authentication when the caller aborts during userinfo", async () => {
     const controller = new AbortController();
     const reason = new Error("cancelled by caller");
diff --git a/extensions/chutes/oauth.ts b/extensions/chutes/oauth.ts
index b9b75696d27e..68ea85502117 100644
--- a/extensions/chutes/oauth.ts
+++ b/extensions/chutes/oauth.ts
@@ -129,6 +129,8 @@ async function fetchChutesUserInfo(params: {
     }),
   });
   if (!response.ok) {
+    // Release the connection instead of leaving the error body to idle timeout.
+    await response.body?.cancel().catch(() => undefined);
     return null;
   }
   const data = await readProviderJsonResponse<unknown>(response, "Chutes userinfo");