CVE-2026-42434

@@ -116,6 +116,7 @@ Docs: https://docs.openclaw.ai
 - Matrix/migration: keep packaged warning-only crypto migrations from being misclassified as actionable when only helper chunks are present, so startup and doctor stay on the warning-only path instead of creating unnecessary migration snapshots. (#64373) Thanks @gumadeiras.
 - Matrix/ACP thread bindings: preserve canonical room casing and parent conversation routing during ACP session spawn so mixed-case room ids bind correctly from top-level rooms and existing Matrix threads. (#64343) Thanks @gumadeiras.
 - Agents/subagents: deduplicate delivered completion announces so retry or re-entry cleanup does not inject duplicate internal-context completion turns into the parent session. (#61525) Thanks @100yenadmin.
+- Agents/exec: keep sandboxed `tools.exec.host=auto` sessions from honoring per-call `host=node` or `host=gateway` overrides while a sandbox runtime is active, and stop advertising node routing in that state so exec stays on the sandbox host. (#63880)
 
 ## 2026.4.9
 

@@ -127,7 +127,20 @@ describe("resolveExecTarget", () => {
         sandboxAvailable: true,
       }),
     ).toThrow(
-      "exec host not allowed (requested gateway; configured host is auto; set tools.exec.host=gateway or auto to allow this override).",
+      "exec host not allowed (requested gateway; configured host is auto; set tools.exec.host=gateway to allow this override).",
+    );
+  });
+
+  it("rejects per-call host=node override from auto when sandbox is available", () => {
+    expect(() =>
+      resolveExecTarget({
+        configuredTarget: "auto",
+        requestedTarget: "node",
+        elevatedRequested: false,
+        sandboxAvailable: true,
+      }),
+    ).toThrow(
+      "exec host not allowed (requested node; configured host is auto; set tools.exec.host=node to allow this override).",
     );
   });
 

@@ -228,7 +228,10 @@ export function isRequestedExecTargetAllowed(params: {
     return true;
   }
   if (params.configuredTarget === "auto") {
-    if (params.sandboxAvailable && params.requestedTarget === "gateway") {
+    if (
+      params.sandboxAvailable &&
+      (params.requestedTarget === "gateway" || params.requestedTarget === "node")
+    ) {
       return false;
     }
     return true;
@@ -254,9 +257,13 @@ export function resolveExecTarget(params: {
   ) {
     const allowedConfig = Array.from(
       new Set(
-        requestedTarget === "gateway" && !params.sandboxAvailable
-          ? ["gateway", "auto"]
-          : [renderExecTargetLabel(requestedTarget), "auto"],
+        configuredTarget === "auto" &&
+          params.sandboxAvailable &&
+          (requestedTarget === "gateway" || requestedTarget === "node")
+          ? [renderExecTargetLabel(requestedTarget)]
+          : requestedTarget === "gateway" && !params.sandboxAvailable
+            ? ["gateway", "auto"]
+            : [renderExecTargetLabel(requestedTarget), "auto"],
       ),
     ).join(" or ");
     throw new Error(

@@ -1,7 +1,7 @@
 import { beforeEach, describe, expect, it, vi } from "vitest";
 import type { SessionEntry } from "../config/sessions.js";
 import * as execApprovals from "../infra/exec-approvals.js";
-import { resolveExecDefaults } from "./exec-defaults.js";
+import { canExecRequestNode, resolveExecDefaults } from "./exec-defaults.js";
 
 describe("resolveExecDefaults", () => {
   beforeEach(() => {
@@ -27,7 +27,7 @@ describe("resolveExecDefaults", () => {
     ).toBe(false);
   });
 
-  it("keeps node routing available when exec host is auto", () => {
+  it("does not advertise node routing when exec host is auto and sandbox is available", () => {
     expect(
       resolveExecDefaults({
         cfg: {
@@ -42,6 +42,25 @@ describe("resolveExecDefaults", () => {
     ).toMatchObject({
       host: "auto",
       effectiveHost: "sandbox",
+      canRequestNode: false,
+    });
+  });
+
+  it("keeps node routing available when exec host is auto without sandbox", () => {
+    expect(
+      resolveExecDefaults({
+        cfg: {
+          tools: {
+            exec: {
+              host: "auto",
+            },
+          },
+        },
+        sandboxAvailable: false,
+      }),
+    ).toMatchObject({
+      host: "auto",
+      effectiveHost: "gateway",
       canRequestNode: true,
     });
   });
@@ -104,4 +123,19 @@ describe("resolveExecDefaults", () => {
       ask: "off",
     });
   });
+
+  it("blocks node advertising in helper calls when sandbox is available", () => {
+    expect(
+      canExecRequestNode({
+        cfg: {
+          tools: {
+            exec: {
+              host: "auto",
+            },
+          },
+        },
+        sandboxAvailable: true,
+      }),
+    ).toBe(false);
+  });
 });

@@ -53,16 +53,38 @@ function resolveExecConfigState(params: {
   };
 }
 
+function resolveExecSandboxAvailability(params: {
+  cfg: OpenClawConfig;
+  sessionKey?: string;
+  sandboxAvailable?: boolean;
+}) {
+  return (
+    params.sandboxAvailable ??
+    (params.sessionKey
+      ? resolveSandboxRuntimeStatus({
+          cfg: params.cfg,
+          sessionKey: params.sessionKey,
+        }).sandboxed
+      : false)
+  );
+}
+
 export function canExecRequestNode(params: {
   cfg?: OpenClawConfig;
   sessionEntry?: SessionEntry;
   agentId?: string;
   sessionKey?: string;
+  sandboxAvailable?: boolean;
 }): boolean {
-  const { host } = resolveExecConfigState(params);
+  const { cfg, host } = resolveExecConfigState(params);
   return isRequestedExecTargetAllowed({
     configuredTarget: host,
     requestedTarget: "node",
+    sandboxAvailable: resolveExecSandboxAvailability({
+      cfg,
+      sessionKey: params.sessionKey,
+      sandboxAvailable: params.sandboxAvailable,
+    }),
   });
 }
 
@@ -81,14 +103,11 @@ export function resolveExecDefaults(params: {
   canRequestNode: boolean;
 } {
   const { cfg, host, agentExec, globalExec } = resolveExecConfigState(params);
-  const sandboxAvailable =
-    params.sandboxAvailable ??
-    (params.sessionKey
-      ? resolveSandboxRuntimeStatus({
-          cfg,
-          sessionKey: params.sessionKey,
-        }).sandboxed
-      : false);
+  const sandboxAvailable = resolveExecSandboxAvailability({
+    cfg,
+    sessionKey: params.sessionKey,
+    sandboxAvailable: params.sandboxAvailable,
+  });
   const resolved = resolveExecTarget({
     configuredTarget: host,
     elevatedRequested: false,
@@ -115,6 +134,7 @@ export function resolveExecDefaults(params: {
     canRequestNode: isRequestedExecTargetAllowed({
       configuredTarget: host,
       requestedTarget: "node",
+      sandboxAvailable,
     }),
   };
 }