From 89ae45f6ec52dfb0ecda82744f838b7b3d2b8c9b Mon Sep 17 00:00:00 2001
From: Michael Kret <88898367+michael-radency@users.noreply.github.com>
Date: Tue, 9 Jun 2026 06:13:51 +0300
Subject: [PATCH] fix(Read/Write Files from Disk Node): Escape square brackets
 in file path selector (#31706)

---
 .../Files/ReadWriteFile/helpers/utils.ts      |  4 ++--
 .../Files/ReadWriteFile/test/utils.test.ts    | 20 +++++++++++++++++++
 2 files changed, 22 insertions(+), 2 deletions(-)

diff --git a/packages/nodes-base/nodes/Files/ReadWriteFile/helpers/utils.ts b/packages/nodes-base/nodes/Files/ReadWriteFile/helpers/utils.ts
index cfab860e4b8..5f099ab2eb1 100644
--- a/packages/nodes-base/nodes/Files/ReadWriteFile/helpers/utils.ts
+++ b/packages/nodes-base/nodes/Files/ReadWriteFile/helpers/utils.ts
@@ -35,8 +35,8 @@ export function errorMapper(
 }
 
 export function escapeSpecialCharacters(str: string) {
-	// Escape parentheses
-	str = str.replace(/[()]/g, '\\$&');
+	// Escape parentheses and square brackets (glob metacharacters)
+	str = str.replace(/[()[\]]/g, '\\$&');
 
 	return str;
 }
diff --git a/packages/nodes-base/nodes/Files/ReadWriteFile/test/utils.test.ts b/packages/nodes-base/nodes/Files/ReadWriteFile/test/utils.test.ts
index 5360d79a15e..c7e265e35d0 100644
--- a/packages/nodes-base/nodes/Files/ReadWriteFile/test/utils.test.ts
+++ b/packages/nodes-base/nodes/Files/ReadWriteFile/test/utils.test.ts
@@ -13,6 +13,12 @@ describe('Read/Write Files from Disk', () => {
 			const expectedOutput = '/home/michael/Desktop/test.txt';
 			expect(escapeSpecialCharacters(input)).toBe(expectedOutput);
 		});
+
+		it('should escape square brackets in a string', () => {
+			const input = '/home/michael/Desktop/[release]/test.txt';
+			const expectedOutput = '/home/michael/Desktop/\\[release\\]/test.txt';
+			expect(escapeSpecialCharacters(input)).toBe(expectedOutput);
+		});
 	});
 
 	describe('normalizeFileSelector', () => {
@@ -39,5 +45,19 @@ describe('Read/Write Files from Disk', () => {
 			const expectedOutput = 'C:/Users/michael/Desktop/test.txt';
 			expect(normalizeFileSelector(input)).toBe(expectedOutput);
 		});
+
+		it('should escape square brackets in Windows file selector', () => {
+			const input =
+				'C:\\Users\\Administrator\\Desktop\\Manga\\Complete\\VTuber Legend [J-Novel Club]\\list.txt';
+			const expectedOutput =
+				'C:/Users/Administrator/Desktop/Manga/Complete/VTuber Legend \\[J-Novel Club\\]/list.txt';
+			expect(normalizeFileSelector(input)).toBe(expectedOutput);
+		});
+
+		it('should escape square brackets in UNIX file selector', () => {
+			const input = '/home/user/VTuber Legend [J-Novel Club]/list.txt';
+			const expectedOutput = '/home/user/VTuber Legend \\[J-Novel Club\\]/list.txt';
+			expect(normalizeFileSelector(input)).toBe(expectedOutput);
+		});
 	});
 });