diff --git a/changelog.d/fixes/11880-provider-icon-prototype-collision.md b/changelog.d/fixes/11880-provider-icon-prototype-collision.md
new file mode 100644
index 00000000000..493608fb8ac
--- /dev/null
+++ b/changelog.d/fixes/11880-provider-icon-prototype-collision.md
@@ -0,0 +1 @@
+- **fix(dashboard):** the providers page no longer crashes into the error boundary when a provider id collides with an `Object.prototype` member (`constructor`, `__proto__`); icon lookups are own-property guarded ([#11880](https://github.com/diegosouzapw/OmniRoute/pull/11880)) — thanks @NoxzRCW
diff --git a/src/shared/components/lobeProviderIcons.ts b/src/shared/components/lobeProviderIcons.ts
index 5cc463d98c5..c45a07cb1a8 100644
--- a/src/shared/components/lobeProviderIcons.ts
+++ b/src/shared/components/lobeProviderIcons.ts
@@ -484,9 +484,17 @@ export function getLobeProviderIcon(
   providerId: string,
   type: "mono" | "color" = "color"
 ): LobeIconComponent | null {
-  const iconKey = LOBE_PROVIDER_ALIASES[providerId.toLowerCase()];
-  if (!iconKey) return null;
+  if (typeof providerId !== "string") return null;
+  const aliasKey = providerId.toLowerCase();
+  // Own-property guards: a providerId such as "constructor" or "__proto__"
+  // otherwise resolves through Object.prototype, yielding a truthy iconKey
+  // whose LOBE_ICON_COMPONENTS lookup is undefined -> `entry.color` throws and
+  // takes down the whole providers dashboard via the error boundary.
+  if (!Object.hasOwn(LOBE_PROVIDER_ALIASES, aliasKey)) return null;
+  const iconKey = LOBE_PROVIDER_ALIASES[aliasKey];
+  if (!iconKey || !Object.hasOwn(LOBE_ICON_COMPONENTS, iconKey)) return null;
 
   const entry = LOBE_ICON_COMPONENTS[iconKey];
+  if (!entry) return null;
   return type === "color" && entry.color ? entry.color : entry.mono;
 }
diff --git a/tests/unit/lobe-provider-icons-prototype-collision-11853.test.ts b/tests/unit/lobe-provider-icons-prototype-collision-11853.test.ts
new file mode 100644
index 00000000000..0e19fe8892f
--- /dev/null
+++ b/tests/unit/lobe-provider-icons-prototype-collision-11853.test.ts
@@ -0,0 +1,48 @@
+/**
+ * Regression for #11853 — the providers dashboard crashed with
+ * "Cannot read properties of undefined (reading 'color')" and rendered a
+ * misleading "Failed to load providers — check your connection" card.
+ *
+ * `getLobeProviderIcon()` indexed two plain object literals without own-property
+ * guards. A provider id whose lowercased form is an Object.prototype member
+ * resolves through the prototype chain: `LOBE_PROVIDER_ALIASES["constructor"]`
+ * returns the Object constructor (truthy, so the `if (!iconKey) return null`
+ * guard passes), then `LOBE_ICON_COMPONENTS[<that function>]` is undefined and
+ * `entry.color` throws — taking the whole page down through the App Router
+ * error boundary, since ProviderIcon calls this for every provider card.
+ *
+ * Only `constructor` and `__proto__` are reachable: every other Object.prototype
+ * member is camelCase and no longer collides after `.toLowerCase()`.
+ *
+ * Runner: node --import tsx/esm --test tests/unit/lobe-provider-icons-prototype-collision-11853.test.ts
+ */
+import test from "node:test";
+import assert from "node:assert/strict";
+
+const { getLobeProviderIcon } = await import("../../src/shared/components/lobeProviderIcons.ts");
+
+test("#11853 — prototype-colliding provider ids return null instead of throwing", () => {
+  for (const id of ["constructor", "__proto__", "CONSTRUCTOR", "__PROTO__"]) {
+    for (const type of ["color", "mono"] as const) {
+      assert.doesNotThrow(() => getLobeProviderIcon(id, type), `${id} (${type}) must not throw`);
+      assert.equal(getLobeProviderIcon(id, type), null, `${id} (${type}) must resolve to null`);
+    }
+  }
+});
+
+test("#11853 — camelCase prototype members were already safe and stay safe", () => {
+  for (const id of ["valueOf", "toString", "hasOwnProperty", "isPrototypeOf"]) {
+    assert.equal(getLobeProviderIcon(id), null);
+  }
+});
+
+test("#11853 — no regression: known providers still resolve, unknown ones still null", () => {
+  assert.notEqual(getLobeProviderIcon("openai"), null);
+  assert.notEqual(getLobeProviderIcon("anthropic"), null);
+  assert.equal(getLobeProviderIcon("definitely-not-a-provider"), null);
+});
+
+test("#11853 — a non-string provider id does not throw", () => {
+  assert.doesNotThrow(() => getLobeProviderIcon(undefined as unknown as string));
+  assert.equal(getLobeProviderIcon(undefined as unknown as string), null);
+});