diff --git a/CHANGELOG.md b/CHANGELOG.md
index aac8fd373..4a7b1ce73 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -20,6 +20,7 @@ Docs: https://docs.openclaw.ai
 - Security/WebSocket preauth: shorten unauthenticated handshake retention and reject oversized pre-auth frames before application-layer parsing to reduce pre-pairing exposure on unsupported public deployments. (`GHSA-jv4g-m82p-2j93`)(#44089) (`GHSA-xwx2-ppv2-wx98`)(#44089) Thanks @ez-lbz and @vincentkoc.
 - Security/Feishu reactions: preserve looked-up group chat typing and fail closed on ambiguous reaction context so group authorization and mention gating cannot be bypassed through synthetic `p2p` reactions. (`GHSA-m69h-jm2f-2pv8`)(#44088) Thanks @zpbrent and @vincentkoc.
 - Security/LINE webhook: require signatures for empty-event POST probes too so unsigned requests no longer confirm webhook reachability with a `200` response. (`GHSA-mhxh-9pjm-w7q5`)(#44090) Thanks @TerminalsandCoffee and @vincentkoc.
+- Security/plugins: disable implicit workspace plugin auto-load so cloned repositories cannot execute workspace plugin code without an explicit trust decision. (`GHSA-99qw-6mr3-36qr`)(#44174) Thanks @lintsinghua and @vincentkoc.
 
 ### Changes
 
diff --git a/src/plugins/config-state.test.ts b/src/plugins/config-state.test.ts
index ebb5d3668..2d287a71e 100644
--- a/src/plugins/config-state.test.ts
+++ b/src/plugins/config-state.test.ts
@@ -145,4 +145,52 @@ describe("resolveEnableState", () => {
     );
     expect(state).toEqual({ enabled: false, reason: "disabled in config" });
   });
+
+  it("disables workspace plugins by default when they are only auto-discovered from the workspace", () => {
+    const state = resolveEnableState("workspace-helper", "workspace", normalizePluginsConfig({}));
+    expect(state).toEqual({
+      enabled: false,
+      reason: "workspace plugin (disabled by default)",
+    });
+  });
+
+  it("allows workspace plugins when explicitly listed in plugins.allow", () => {
+    const state = resolveEnableState(
+      "workspace-helper",
+      "workspace",
+      normalizePluginsConfig({
+        allow: ["workspace-helper"],
+      }),
+    );
+    expect(state).toEqual({ enabled: true });
+  });
+
+  it("allows workspace plugins when explicitly enabled in plugin entries", () => {
+    const state = resolveEnableState(
+      "workspace-helper",
+      "workspace",
+      normalizePluginsConfig({
+        entries: {
+          "workspace-helper": {
+            enabled: true,
+          },
+        },
+      }),
+    );
+    expect(state).toEqual({ enabled: true });
+  });
+
+  it("does not let the default memory slot auto-enable an untrusted workspace plugin", () => {
+    const state = resolveEnableState(
+      "memory-core",
+      "workspace",
+      normalizePluginsConfig({
+        slots: { memory: "memory-core" },
+      }),
+    );
+    expect(state).toEqual({
+      enabled: false,
+      reason: "workspace plugin (disabled by default)",
+    });
+  });
 });
diff --git a/src/plugins/config-state.ts b/src/plugins/config-state.ts
index e671aae7e..fbb4b92a9 100644
--- a/src/plugins/config-state.ts
+++ b/src/plugins/config-state.ts
@@ -201,10 +201,14 @@ export function resolveEnableState(
   if (entry?.enabled === false) {
     return { enabled: false, reason: "disabled in config" };
   }
+  const explicitlyAllowed = config.allow.includes(id);
+  if (origin === "workspace" && !explicitlyAllowed && entry?.enabled !== true) {
+    return { enabled: false, reason: "workspace plugin (disabled by default)" };
+  }
   if (config.slots.memory === id) {
     return { enabled: true };
   }
-  if (config.allow.length > 0 && !config.allow.includes(id)) {
+  if (config.allow.length > 0 && !explicitlyAllowed) {
     return { enabled: false, reason: "not in allowlist" };
   }
   if (entry?.enabled === true) {
diff --git a/src/plugins/loader.test.ts b/src/plugins/loader.test.ts
index 00af213be..2241fbd1f 100644
--- a/src/plugins/loader.test.ts
+++ b/src/plugins/loader.test.ts
@@ -1449,6 +1449,62 @@ describe("loadOpenClawPlugins", () => {
     ).toBe(true);
   });
 
+  it("does not auto-load workspace-discovered plugins unless explicitly trusted", () => {
+    useNoBundledPlugins();
+    const workspaceDir = makeTempDir();
+    const workspaceExtDir = path.join(workspaceDir, ".openclaw", "extensions", "workspace-helper");
+    fs.mkdirSync(workspaceExtDir, { recursive: true });
+    writePlugin({
+      id: "workspace-helper",
+      body: `module.exports = { id: "workspace-helper", register() {} };`,
+      dir: workspaceExtDir,
+      filename: "index.cjs",
+    });
+
+    const registry = loadOpenClawPlugins({
+      cache: false,
+      workspaceDir,
+      config: {
+        plugins: {
+          enabled: true,
+        },
+      },
+    });
+
+    const workspacePlugin = registry.plugins.find((entry) => entry.id === "workspace-helper");
+    expect(workspacePlugin?.origin).toBe("workspace");
+    expect(workspacePlugin?.status).toBe("disabled");
+    expect(workspacePlugin?.error).toContain("workspace plugin (disabled by default)");
+  });
+
+  it("loads workspace-discovered plugins when plugins.allow explicitly trusts them", () => {
+    useNoBundledPlugins();
+    const workspaceDir = makeTempDir();
+    const workspaceExtDir = path.join(workspaceDir, ".openclaw", "extensions", "workspace-helper");
+    fs.mkdirSync(workspaceExtDir, { recursive: true });
+    writePlugin({
+      id: "workspace-helper",
+      body: `module.exports = { id: "workspace-helper", register() {} };`,
+      dir: workspaceExtDir,
+      filename: "index.cjs",
+    });
+
+    const registry = loadOpenClawPlugins({
+      cache: false,
+      workspaceDir,
+      config: {
+        plugins: {
+          enabled: true,
+          allow: ["workspace-helper"],
+        },
+      },
+    });
+
+    const workspacePlugin = registry.plugins.find((entry) => entry.id === "workspace-helper");
+    expect(workspacePlugin?.origin).toBe("workspace");
+    expect(workspacePlugin?.status).toBe("loaded");
+  });
+
   it("warns when loaded non-bundled plugin has no install/load-path provenance", () => {
     useNoBundledPlugins();
     const stateDir = makeTempDir();