diff --git a/js/common.js b/js/common.js
index 30af9c12..5c82259e 100644
--- a/js/common.js
+++ b/js/common.js
@@ -659,14 +659,12 @@ export async function uninstallNodes(nodeList, options = {}) {
 		});
 
 		if (res.status != 200) {
-			errorMsg = `'${nodeItem.title || nodeItem.name}': `;
+			errorMsg = `'${sanitizeHTML(String(nodeItem.title || nodeItem.name))}': `;
 
 			if (res.status == 403) {
 				errorMsg += `This action is not allowed with this security level configuration.\n`;
-			} else if (res.status == 404) {
-				errorMsg += `With the current security level configuration, only custom nodes from the <B>"default channel"</B> can be uninstalled.\n`;
 			} else {
-				errorMsg += await res.text() + '\n';
+				errorMsg += sanitizeHTML(await res.text()) + '\n';
 			}
 
 			break;
diff --git a/js/custom-nodes-manager.js b/js/custom-nodes-manager.js
index 9b7917e6..1963ae60 100644
--- a/js/custom-nodes-manager.js
+++ b/js/custom-nodes-manager.js
@@ -1467,7 +1467,7 @@ export class CustomNodesManager {
 			});
 
 			if (res.status != 200) {
-				errorMsg = `'${item.title}': `;
+				errorMsg = `'${sanitizeHTML(String(item.title))}': `;
 
 				if(res.status == 403) {
 					try {
@@ -1480,10 +1480,8 @@ export class CustomNodesManager {
 					} catch {
 						errorMsg += `This action is not allowed with this security level configuration.\n`;
 					}
-				} else if(res.status == 404) {
-					errorMsg += `With the current security level configuration, only custom nodes from the <B>"default channel"</B> can be installed.\n`;
 				} else {
-					errorMsg += await res.text() + '\n';
+					errorMsg += sanitizeHTML(await res.text()) + '\n';
 				}
 
 				break;