diff --git a/astrbot/core/desktop_runtime.py b/astrbot/core/desktop_runtime.py
index 196a3ec66f..0f8e173c7b 100644
--- a/astrbot/core/desktop_runtime.py
+++ b/astrbot/core/desktop_runtime.py
@@ -1,10 +1,60 @@
+import ipaddress
 import os
+import secrets
 
 DESKTOP_MANAGED_RESTART_MESSAGE = (
     "AstrBot Desktop manages this backend process. Please restart or update from "
     "the desktop app instead of the core WebUI."
 )
 
+DESKTOP_SESSION_SECRET_ENV = "ASTRBOT_DESKTOP_SESSION_SECRET"
+DESKTOP_SESSION_SECRET_MIN_LENGTH = 32
+
 
 def is_desktop_managed_backend() -> bool:
     return os.environ.get("ASTRBOT_DESKTOP_MANAGED") == "1"
+
+
+def get_desktop_session_secret() -> str | None:
+    """Return the in-memory secret when desktop session auth is enabled."""
+    if not is_desktop_managed_backend():
+        return None
+
+    secret = os.environ.get(DESKTOP_SESSION_SECRET_ENV, "").strip()
+    if len(secret) < DESKTOP_SESSION_SECRET_MIN_LENGTH:
+        return None
+    return secret
+
+
+def is_desktop_session_auth_enabled() -> bool:
+    return get_desktop_session_secret() is not None
+
+
+def is_loopback_client_host(host: str | None) -> bool:
+    if not host:
+        return False
+    try:
+        address = ipaddress.ip_address(host)
+    except ValueError:
+        return False
+
+    if address.is_loopback:
+        return True
+    if isinstance(address, ipaddress.IPv6Address) and address.ipv4_mapped:
+        return address.ipv4_mapped.is_loopback
+    return False
+
+
+def verify_desktop_session_secret(
+    provided_secret: str | None,
+    client_host: str | None,
+) -> bool:
+    configured_secret = get_desktop_session_secret()
+    if configured_secret is None or not is_loopback_client_host(client_host):
+        return False
+    if not isinstance(provided_secret, str):
+        return False
+    return secrets.compare_digest(
+        provided_secret.encode("utf-8"),
+        configured_secret.encode("utf-8"),
+    )
diff --git a/astrbot/dashboard/api/auth.py b/astrbot/dashboard/api/auth.py
index 789151e022..1a2e63e3ec 100644
--- a/astrbot/dashboard/api/auth.py
+++ b/astrbot/dashboard/api/auth.py
@@ -27,6 +27,8 @@
     AuthServiceResult,
 )
 
+DESKTOP_SESSION_HEADER = "X-AstrBot-Desktop-Session"
+
 router = APIRouter(tags=["Auth"])
 legacy_router = APIRouter(
     prefix="/api/auth",
@@ -389,6 +391,18 @@ async def login(
     return await _login(request, payload, service)
 
 
+@router.post("/auth/desktop-session", include_in_schema=False)
+async def desktop_session(
+    request: Request,
+    service: AuthService = Depends(get_auth_service),
+):
+    result = await service.desktop_session(
+        request.headers.get(DESKTOP_SESSION_HEADER),
+        request.client.host if request.client else None,
+    )
+    return _auth_service_response(request, result)
+
+
 @legacy_router.post("/login")
 async def dashboard_login(
     request: Request,
diff --git a/astrbot/dashboard/server.py b/astrbot/dashboard/server.py
index 7365b19879..031a136581 100644
--- a/astrbot/dashboard/server.py
+++ b/astrbot/dashboard/server.py
@@ -38,6 +38,7 @@
         "/api/v1/auth/totp/setup",
         "/api/auth/login",
         "/api/v1/auth/login",
+        "/api/v1/auth/desktop-session",
     }
 )
 
diff --git a/astrbot/dashboard/services/auth_service.py b/astrbot/dashboard/services/auth_service.py
index 1883b9c47e..4ff021f06e 100644
--- a/astrbot/dashboard/services/auth_service.py
+++ b/astrbot/dashboard/services/auth_service.py
@@ -12,6 +12,11 @@
 from astrbot.core import DEMO_MODE
 from astrbot.core.config.astrbot_config import AstrBotConfig
 from astrbot.core.db import BaseDatabase
+from astrbot.core.desktop_runtime import (
+    is_desktop_session_auth_enabled,
+    is_loopback_client_host,
+    verify_desktop_session_secret,
+)
 from astrbot.core.utils.auth_password import (
     is_default_dashboard_password,
     is_md5_dashboard_password,
@@ -122,6 +127,14 @@ def __init__(
         self.demo_mode = demo_mode
 
     async def setup_status(self) -> AuthServiceResult:
+        if is_desktop_session_auth_enabled():
+            return AuthServiceResult(
+                data={
+                    "setup_required": False,
+                    "skip_default_password_auth": False,
+                    "password_upgrade_required": False,
+                }
+            )
         return AuthServiceResult(
             data={
                 "setup_required": await self.is_setup_required(),
@@ -133,6 +146,31 @@ async def setup_status(self) -> AuthServiceResult:
             }
         )
 
+    async def desktop_session(
+        self,
+        provided_secret: str | None,
+        client_host: str | None,
+    ) -> AuthServiceResult:
+        if not is_desktop_session_auth_enabled() or not is_loopback_client_host(
+            client_host
+        ):
+            return self.error("Not found", status_code=404)
+        if not verify_desktop_session_secret(provided_secret, client_host):
+            return self.error("Invalid desktop session", status_code=401)
+
+        username = self.config["dashboard"]["username"]
+        token = self.generate_jwt(username, auth_source="desktop")
+        return AuthServiceResult(
+            data={
+                "token": token,
+                "username": username,
+                "change_pwd_hint": False,
+                "md5_pwd_hint": False,
+                "password_upgrade_required": False,
+            },
+            jwt_token=token,
+        )
+
     async def totp_setup(self, post_data: object) -> AuthServiceResult:
         if isinstance(post_data, dict) and post_data.get("secret"):
             secret = post_data["secret"]
@@ -406,12 +444,14 @@ async def edit_account(self, post_data: object) -> AuthServiceResult:
 
         return AuthServiceResult(message="Updated account successfully")
 
-    def generate_jwt(self, username: str):
+    def generate_jwt(self, username: str, *, auth_source: str = "password"):
         payload = {
             "username": username,
             "exp": datetime.datetime.now(datetime.timezone.utc)
             + datetime.timedelta(days=7),
         }
+        if auth_source != "password":
+            payload["auth_source"] = auth_source
         jwt_token = self.config["dashboard"].get("jwt_secret", None)
         if not jwt_token:
             raise ValueError("JWT secret is not set in the cmd_config.")
diff --git a/astrbot/dashboard/services/stat_service.py b/astrbot/dashboard/services/stat_service.py
index 204d7c4e40..061702d659 100644
--- a/astrbot/dashboard/services/stat_service.py
+++ b/astrbot/dashboard/services/stat_service.py
@@ -27,6 +27,7 @@
 from astrbot.core.desktop_runtime import (
     DESKTOP_MANAGED_RESTART_MESSAGE,
     is_desktop_managed_backend,
+    is_desktop_session_auth_enabled,
 )
 from astrbot.core.utils.astrbot_path import get_astrbot_path
 from astrbot.core.utils.auth_password import (
@@ -75,6 +76,8 @@ def get_running_time_components(total_seconds: int):
         return {"hours": hours, "minutes": minutes, "seconds": seconds}
 
     async def is_default_cred(self):
+        if is_desktop_session_auth_enabled():
+            return False
         password_change_required = await is_password_change_required(
             self.db_helper,
             self.config,
@@ -96,6 +99,14 @@ async def is_default_cred(self):
         ) and not DEMO_MODE
 
     async def get_version(self) -> dict:
+        if is_desktop_session_auth_enabled():
+            return {
+                "version": VERSION,
+                "dashboard_version": await get_dashboard_version(),
+                "change_pwd_hint": False,
+                "md5_pwd_hint": False,
+                "password_upgrade_required": False,
+            }
         storage_upgraded = await is_password_storage_upgraded(
             self.db_helper,
             self.config,
diff --git a/tests/test_dashboard.py b/tests/test_dashboard.py
index 896d7288f2..8d55988038 100644
--- a/tests/test_dashboard.py
+++ b/tests/test_dashboard.py
@@ -12,6 +12,7 @@
 from types import SimpleNamespace
 from urllib.parse import parse_qs, urlsplit, urlunsplit
 
+import jwt
 import pyotp
 import pytest
 import pytest_asyncio
@@ -435,6 +436,120 @@ async def test_auth_login(
     assert "Secure" not in jwt_cookie_header
 
 
+@pytest.mark.asyncio
+async def test_desktop_session_issues_jwt_without_password(
+    app: FastAPIAppAdapter,
+    core_lifecycle_td: AstrBotCoreLifecycle,
+    monkeypatch: pytest.MonkeyPatch,
+):
+    secret = "desktop-session-secret-" * 2
+    monkeypatch.setenv("ASTRBOT_DESKTOP_MANAGED", "1")
+    monkeypatch.setenv("ASTRBOT_DESKTOP_SESSION_SECRET", secret)
+    app._dashboard_server._rate_limiter_registry.clear()
+
+    response = await app.test_client().post(
+        "/api/v1/auth/desktop-session",
+        headers={"X-AstrBot-Desktop-Session": secret},
+        json={},
+    )
+    data = await response.get_json()
+
+    assert response.status_code == 200
+    assert data["status"] == "ok"
+    assert data["data"]["username"] == core_lifecycle_td.astrbot_config[
+        "dashboard"
+    ]["username"]
+    token = data["data"]["token"]
+    payload = jwt.decode(
+        token,
+        core_lifecycle_td.astrbot_config["dashboard"]["jwt_secret"],
+        algorithms=["HS256"],
+    )
+    assert payload["auth_source"] == "desktop"
+
+
+@pytest.mark.asyncio
+async def test_desktop_session_rejects_wrong_secret(
+    app: FastAPIAppAdapter,
+    monkeypatch: pytest.MonkeyPatch,
+):
+    monkeypatch.setenv("ASTRBOT_DESKTOP_MANAGED", "1")
+    monkeypatch.setenv("ASTRBOT_DESKTOP_SESSION_SECRET", "a" * 64)
+    app._dashboard_server._rate_limiter_registry.clear()
+
+    response = await app.test_client().post(
+        "/api/v1/auth/desktop-session",
+        headers={"X-AstrBot-Desktop-Session": "b" * 64},
+        json={},
+    )
+    data = await response.get_json()
+
+    assert response.status_code == 401
+    assert data["status"] == "error"
+    assert "token" not in (data.get("data") or {})
+
+
+@pytest.mark.asyncio
+async def test_desktop_session_endpoint_is_hidden_when_not_managed(
+    app: FastAPIAppAdapter,
+    monkeypatch: pytest.MonkeyPatch,
+):
+    monkeypatch.delenv("ASTRBOT_DESKTOP_MANAGED", raising=False)
+    monkeypatch.delenv("ASTRBOT_DESKTOP_SESSION_SECRET", raising=False)
+    app._dashboard_server._rate_limiter_registry.clear()
+
+    response = await app.test_client().post(
+        "/api/v1/auth/desktop-session",
+        headers={"X-AstrBot-Desktop-Session": "a" * 64},
+        json={},
+    )
+    data = await response.get_json()
+
+    assert response.status_code == 404
+    assert data["status"] == "error"
+
+
+@pytest.mark.asyncio
+async def test_desktop_session_suppresses_password_setup_and_warnings(
+    app: FastAPIAppAdapter,
+    core_lifecycle_td: AstrBotCoreLifecycle,
+    monkeypatch: pytest.MonkeyPatch,
+):
+    secret = "desktop-session-secret-" * 2
+    monkeypatch.setenv("ASTRBOT_DESKTOP_MANAGED", "1")
+    monkeypatch.setenv("ASTRBOT_DESKTOP_SESSION_SECRET", secret)
+    app._dashboard_server._rate_limiter_registry.clear()
+    await _set_dashboard_password_change_required(core_lifecycle_td, True)
+
+    try:
+        client = app.test_client()
+        setup_response = await client.get("/api/v1/auth/setup-status")
+        setup_data = await setup_response.get_json()
+        assert setup_data["data"] == {
+            "setup_required": False,
+            "skip_default_password_auth": False,
+            "password_upgrade_required": False,
+        }
+
+        session_response = await client.post(
+            "/api/v1/auth/desktop-session",
+            headers={"X-AstrBot-Desktop-Session": secret},
+            json={},
+        )
+        session_data = await session_response.get_json()
+        token = session_data["data"]["token"]
+        version_response = await client.get(
+            "/api/v1/stats/version",
+            headers={"Authorization": f"Bearer {token}"},
+        )
+        version_data = await version_response.get_json()
+        assert version_data["data"]["change_pwd_hint"] is False
+        assert version_data["data"]["md5_pwd_hint"] is False
+        assert version_data["data"]["password_upgrade_required"] is False
+    finally:
+        await _set_dashboard_password_change_required(core_lifecycle_td, False)
+
+
 @pytest.mark.asyncio
 async def test_auth_login_secure_cookie_override(
     app: FastAPIAppAdapter,
diff --git a/tests/test_desktop_runtime.py b/tests/test_desktop_runtime.py
new file mode 100644
index 0000000000..5a88d7548f
--- /dev/null
+++ b/tests/test_desktop_runtime.py
@@ -0,0 +1,42 @@
+from astrbot.core.desktop_runtime import (
+    DESKTOP_SESSION_SECRET_ENV,
+    get_desktop_session_secret,
+    is_desktop_session_auth_enabled,
+    is_loopback_client_host,
+    verify_desktop_session_secret,
+)
+
+
+def test_desktop_session_auth_requires_managed_backend(monkeypatch):
+    monkeypatch.delenv("ASTRBOT_DESKTOP_MANAGED", raising=False)
+    monkeypatch.setenv(DESKTOP_SESSION_SECRET_ENV, "a" * 64)
+
+    assert get_desktop_session_secret() is None
+    assert is_desktop_session_auth_enabled() is False
+
+
+def test_desktop_session_auth_rejects_short_secret(monkeypatch):
+    monkeypatch.setenv("ASTRBOT_DESKTOP_MANAGED", "1")
+    monkeypatch.setenv(DESKTOP_SESSION_SECRET_ENV, "too-short")
+
+    assert get_desktop_session_secret() is None
+    assert is_desktop_session_auth_enabled() is False
+
+
+def test_desktop_session_secret_only_matches_on_loopback(monkeypatch):
+    secret = "desktop-session-secret-" * 2
+    monkeypatch.setenv("ASTRBOT_DESKTOP_MANAGED", "1")
+    monkeypatch.setenv(DESKTOP_SESSION_SECRET_ENV, secret)
+
+    assert verify_desktop_session_secret(secret, "127.0.0.1") is True
+    assert verify_desktop_session_secret(secret, "::1") is True
+    assert verify_desktop_session_secret(secret, "::ffff:127.0.0.1") is True
+    assert verify_desktop_session_secret("wrong" * 10, "127.0.0.1") is False
+    assert verify_desktop_session_secret(secret, "192.168.1.10") is False
+
+
+def test_loopback_client_host_rejects_names_and_unspecified_addresses():
+    assert is_loopback_client_host("localhost") is False
+    assert is_loopback_client_host("0.0.0.0") is False
+    assert is_loopback_client_host("::") is False
+    assert is_loopback_client_host(None) is False