diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2f23a06ee3e..22570d3bcca 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -122,6 +122,7 @@ Docs: https://docs.openclaw.ai
 - LINE/status/config/webhook synthesis: fix status false positives from snapshot/config state and accept LINE webhook HEAD probes for compatibility. (from #10487, #25726, #27537, #27908, #31387) Thanks @BlueBirdBack, @stakeswky, @loiie45e, @puritysb, and @mcaxtr.
 - LINE cleanup/test follow-ups: fold cleanup/test learnings into the synthesis review path while keeping runtime changes focused on regression fixes. (from #17630, #17289) Thanks @Clawborn and @davidahmann.
 - Mattermost/interactive buttons: add interactive button send/callback support with directory-based channel/user target resolution, and harden callbacks via account-scoped HMAC verification plus sender-scoped DM routing. (#19957) thanks @tonydehnke.
+- Feishu/groupPolicy legacy alias compatibility: treat legacy `groupPolicy: "allowall"` as `open` in both schema parsing and runtime policy checks so intended open-group configs no longer silently drop group messages when `groupAllowFrom` is empty. (from #36358) Thanks @Sid-Qin.
 
 - Mattermost/plugin SDK import policy: replace remaining monolithic `openclaw/plugin-sdk` imports in Mattermost mention-gating paths/tests with scoped subpaths (`openclaw/plugin-sdk/compat` and `openclaw/plugin-sdk/mattermost`) so `pnpm check` passes `lint:plugins:no-monolithic-plugin-sdk-entry-imports` on baseline. (#36480) Thanks @Takhoffman.
 
diff --git a/extensions/feishu/src/config-schema.test.ts b/extensions/feishu/src/config-schema.test.ts
index 06c954cd164..035f89a2940 100644
--- a/extensions/feishu/src/config-schema.test.ts
+++ b/extensions/feishu/src/config-schema.test.ts
@@ -24,6 +24,14 @@ describe("FeishuConfigSchema webhook validation", () => {
     expect(result.accounts?.main?.requireMention).toBeUndefined();
   });
 
+  it("normalizes legacy groupPolicy allowall to open", () => {
+    const result = FeishuConfigSchema.parse({
+      groupPolicy: "allowall",
+    });
+
+    expect(result.groupPolicy).toBe("open");
+  });
+
   it("rejects top-level webhook mode without verificationToken", () => {
     const result = FeishuConfigSchema.safeParse({
       connectionMode: "webhook",
diff --git a/extensions/feishu/src/config-schema.ts b/extensions/feishu/src/config-schema.ts
index c7efafe2938..f4acef5735c 100644
--- a/extensions/feishu/src/config-schema.ts
+++ b/extensions/feishu/src/config-schema.ts
@@ -4,7 +4,10 @@ export { z };
 import { buildSecretInputSchema, hasConfiguredSecretInput } from "./secret-input.js";
 
 const DmPolicySchema = z.enum(["open", "pairing", "allowlist"]);
-const GroupPolicySchema = z.enum(["open", "allowlist", "disabled"]);
+const GroupPolicySchema = z.union([
+  z.enum(["open", "allowlist", "disabled"]),
+  z.literal("allowall").transform(() => "open" as const),
+]);
 const FeishuDomainSchema = z.union([
   z.enum(["feishu", "lark"]),
   z.string().url().startsWith("https://"),
diff --git a/extensions/feishu/src/policy.test.ts b/extensions/feishu/src/policy.test.ts
index 3a159023546..c53532df3ff 100644
--- a/extensions/feishu/src/policy.test.ts
+++ b/extensions/feishu/src/policy.test.ts
@@ -110,5 +110,45 @@ describe("feishu policy", () => {
         }),
       ).toBe(true);
     });
+
+    it("allows group when groupPolicy is 'open'", () => {
+      expect(
+        isFeishuGroupAllowed({
+          groupPolicy: "open",
+          allowFrom: [],
+          senderId: "oc_group_999",
+        }),
+      ).toBe(true);
+    });
+
+    it("treats 'allowall' as equivalent to 'open'", () => {
+      expect(
+        isFeishuGroupAllowed({
+          groupPolicy: "allowall",
+          allowFrom: [],
+          senderId: "oc_group_999",
+        }),
+      ).toBe(true);
+    });
+
+    it("rejects group when groupPolicy is 'disabled'", () => {
+      expect(
+        isFeishuGroupAllowed({
+          groupPolicy: "disabled",
+          allowFrom: ["oc_group_999"],
+          senderId: "oc_group_999",
+        }),
+      ).toBe(false);
+    });
+
+    it("rejects group when groupPolicy is 'allowlist' and allowFrom is empty", () => {
+      expect(
+        isFeishuGroupAllowed({
+          groupPolicy: "allowlist",
+          allowFrom: [],
+          senderId: "oc_group_999",
+        }),
+      ).toBe(false);
+    });
   });
 });
diff --git a/extensions/feishu/src/policy.ts b/extensions/feishu/src/policy.ts
index 9c6164fc9e0..051c8bcdf7b 100644
--- a/extensions/feishu/src/policy.ts
+++ b/extensions/feishu/src/policy.ts
@@ -92,7 +92,7 @@ export function resolveFeishuGroupToolPolicy(
 }
 
 export function isFeishuGroupAllowed(params: {
-  groupPolicy: "open" | "allowlist" | "disabled";
+  groupPolicy: "open" | "allowlist" | "disabled" | "allowall";
   allowFrom: Array<string | number>;
   senderId: string;
   senderIds?: Array<string | null | undefined>;
@@ -102,7 +102,7 @@ export function isFeishuGroupAllowed(params: {
   if (groupPolicy === "disabled") {
     return false;
   }
-  if (groupPolicy === "open") {
+  if (groupPolicy === "open" || groupPolicy === "allowall") {
     return true;
   }
   return resolveFeishuAllowlistMatch(params).allowed;