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fix(Database): escape table identifiers in SQLite3 foreign_key_list PRAGMA #10732

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fix(Database): escape table identifiers in SQLite3 foreign_key_list PRAGMA #10732

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2a870c9
fix(Database): escape table identifiers in SQLite3 foreign_key_list P…
gr8man Nov 5, 2026
53fe70b
fix: properly escape table name and schema in SQLite3 getForeignKeyData
gr8man Nov 6, 2026
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1 change: 1 addition & 0 deletions docs/changelogs/v4.7.7.md
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Expand Up @@ -14,6 +14,7 @@ Release Date: Unreleased

## Bugs Fixed

- **Database:** Fixed a bug where `SQLite3\Connection::_foreignKeyData()` did not escape table identifiers in `PRAGMA foreign_key_list`, causing syntax errors on table names containing hyphens or schemas.
- **Security:** Fixed a bug where `Security::__construct()` threw a `TypeError` when the CSRF cookie was an array, causing an HTTP 500 response for affected requests.
- **Worker Mode:** Fixed a bug where every request that ended with an uncaught exception, including a `404 Page Not Found` without a 404 override, called `exit()` in the exception handler. This ended the worker script, so FrankenPHP booted a new one, and the worker loop skipped its cleanup after the request. The exception handler now returns to the worker loop.

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8 changes: 7 additions & 1 deletion system/Database/SQLite3/Connection.php
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Expand Up @@ -363,7 +363,13 @@ protected function _foreignKeyData(string $table): array
return [];
}

$query = $this->query("PRAGMA foreign_key_list({$table})")->getResult();
$parts = explode('.', $table);
$tableName = array_pop($parts);
$schema = array_pop($parts);
$pragma = ($schema === null || $schema === '' ? '' : $this->escapeIdentifier($schema) . '.')
. 'foreign_key_list(' . $this->escape($tableName) . ')';

$query = $this->query('PRAGMA ' . $pragma)->getResult();
$indexes = [];

foreach ($query as $row) {
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172 changes: 172 additions & 0 deletions tests/system/Database/Live/SQLite3/GetForeignKeyDataTest.php
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@@ -0,0 +1,172 @@
<?php

declare(strict_types=1);

/**
* This file is part of CodeIgniter 4 framework.
*
* (c) CodeIgniter Foundation <admin@codeigniter.com>
*
* For the full copyright and license information, please view
* the LICENSE file that was distributed with this source code.
*/

namespace CodeIgniter\Database\Live\SQLite3;

use CodeIgniter\Test\CIUnitTestCase;
use Config\Database;
use PHPUnit\Framework\Attributes\Group;

/**
* @internal
*/
#[Group('DatabaseLive')]
final class GetForeignKeyDataTest extends CIUnitTestCase
{
protected function setUp(): void
{
parent::setUp();

$this->db = Database::connect($this->DBGroup);
if ($this->db->DBDriver !== 'SQLite3') {
$this->markTestSkipped('This test is only for SQLite3.');
}

$config = [
'DBDriver' => 'SQLite3',
'database' => 'database.db',
'DBDebug' => true,
];
$this->db = db_connect($config, false);
}

public function testGetForeignKeyDataWithSpecialTableName(): void
{
$this->db->query('DROP TABLE IF EXISTS `test-parent`');
$this->db->query('DROP TABLE IF EXISTS `test-child`');

$this->db->query('CREATE TABLE `test-parent` (id INTEGER PRIMARY KEY)');
$this->db->query('CREATE TABLE `test-child` (id INTEGER PRIMARY KEY, parent_id INTEGER, FOREIGN KEY (parent_id) REFERENCES `test-parent`(id))');

$foreignKeys = $this->db->getForeignKeyData('test-child');

$this->assertCount(1, $foreignKeys);
$firstKey = reset($foreignKeys);
$this->assertSame('test-child', $firstKey->table_name);
$this->assertSame(['parent_id'], $firstKey->column_name);
$this->assertSame('test-parent', $firstKey->foreign_table_name);
$this->assertSame(['id'], $firstKey->foreign_column_name);

$this->db->query('DROP TABLE IF EXISTS `test-child`');
$this->db->query('DROP TABLE IF EXISTS `test-parent`');
}

public function testGetForeignKeyDataWithAttachedDatabase(): void
{
$this->db->query('ATTACH DATABASE ":memory:" AS `test_schema`');
$this->db->query('DROP TABLE IF EXISTS `test_schema`.`attached-parent`');
$this->db->query('DROP TABLE IF EXISTS `test_schema`.`attached-child`');

$this->db->query('CREATE TABLE `test_schema`.`attached-parent` (id INTEGER PRIMARY KEY)');
$this->db->query('CREATE TABLE `test_schema`.`attached-child` (id INTEGER PRIMARY KEY, p_id INTEGER, FOREIGN KEY (p_id) REFERENCES `attached-parent`(id))');

$foreignKeys = $this->db->getForeignKeyData('test_schema.attached-child');

$this->assertCount(1, $foreignKeys);
$firstKey = reset($foreignKeys);
$this->assertSame('test_schema.attached-child', $firstKey->table_name);
$this->assertSame(['p_id'], $firstKey->column_name);
$this->assertSame('attached-parent', $firstKey->foreign_table_name);
$this->assertSame(['id'], $firstKey->foreign_column_name);

$this->db->query('DROP TABLE IF EXISTS `test_schema`.`attached-child`');
$this->db->query('DROP TABLE IF EXISTS `test_schema`.`attached-parent`');
$this->db->query('DETACH DATABASE `test_schema`');
}

public function testGetForeignKeyDataWithParenthesesInTableName(): void
{
$this->db->query('DROP TABLE IF EXISTS "parent(v1)"');
$this->db->query('DROP TABLE IF EXISTS "child(v2)"');

$this->db->query('CREATE TABLE "parent(v1)" (id INTEGER PRIMARY KEY)');
$this->db->query('CREATE TABLE "child(v2)" (id INTEGER PRIMARY KEY, parent_id INTEGER, FOREIGN KEY (parent_id) REFERENCES "parent(v1)"(id))');

$foreignKeys = $this->db->getForeignKeyData('child(v2)');

$this->assertCount(1, $foreignKeys);
$firstKey = reset($foreignKeys);
$this->assertSame('child(v2)', $firstKey->table_name);
$this->assertSame(['parent_id'], $firstKey->column_name);
$this->assertSame('parent(v1)', $firstKey->foreign_table_name);
$this->assertSame(['id'], $firstKey->foreign_column_name);

$this->db->query('DROP TABLE IF EXISTS "child(v2)"');
$this->db->query('DROP TABLE IF EXISTS "parent(v1)"');
}

public function testGetForeignKeyDataWithQuotesAndSpacesInTableName(): void
{
$this->db->query('DROP TABLE IF EXISTS "parent table"');
$this->db->query('DROP TABLE IF EXISTS "child\'quote with space"');

$this->db->query('CREATE TABLE "parent table" (id INTEGER PRIMARY KEY)');
$this->db->query('CREATE TABLE "child\'quote with space" (id INTEGER PRIMARY KEY, p_id INTEGER, FOREIGN KEY (p_id) REFERENCES "parent table"(id))');

$foreignKeys = $this->db->getForeignKeyData("child'quote with space");

$this->assertCount(1, $foreignKeys);
$firstKey = reset($foreignKeys);
$this->assertSame("child'quote with space", $firstKey->table_name);
$this->assertSame(['p_id'], $firstKey->column_name);
$this->assertSame('parent table', $firstKey->foreign_table_name);
$this->assertSame(['id'], $firstKey->foreign_column_name);

$this->db->query('DROP TABLE IF EXISTS "child\'quote with space"');
$this->db->query('DROP TABLE IF EXISTS "parent table"');
}

public function testGetForeignKeyDataWithNumericAndReservedWordTableName(): void
{
$this->db->query('DROP TABLE IF EXISTS "order"');
$this->db->query('DROP TABLE IF EXISTS "12345"');

$this->db->query('CREATE TABLE "order" (id INTEGER PRIMARY KEY)');
$this->db->query('CREATE TABLE "12345" (id INTEGER PRIMARY KEY, order_id INTEGER, FOREIGN KEY (order_id) REFERENCES "order"(id))');

$foreignKeys = $this->db->getForeignKeyData('12345');

$this->assertCount(1, $foreignKeys);
$firstKey = reset($foreignKeys);
$this->assertSame('12345', $firstKey->table_name);
$this->assertSame(['order_id'], $firstKey->column_name);
$this->assertSame('order', $firstKey->foreign_table_name);
$this->assertSame(['id'], $firstKey->foreign_column_name);

$this->db->query('DROP TABLE IF EXISTS "12345"');
$this->db->query('DROP TABLE IF EXISTS "order"');
}

public function testGetForeignKeyDataWithAttachedDatabaseSpecialIdentifiers(): void
{
$this->db->query('ATTACH DATABASE ":memory:" AS "schema-db(1)"');
$this->db->query('DROP TABLE IF EXISTS "schema-db(1)"."parent(v1)"');
$this->db->query('DROP TABLE IF EXISTS "schema-db(1)"."child(v2)"');

$this->db->query('CREATE TABLE "schema-db(1)"."parent(v1)" (id INTEGER PRIMARY KEY)');
$this->db->query('CREATE TABLE "schema-db(1)"."child(v2)" (id INTEGER PRIMARY KEY, p_id INTEGER, FOREIGN KEY (p_id) REFERENCES "parent(v1)"(id))');

$foreignKeys = $this->db->getForeignKeyData('schema-db(1).child(v2)');

$this->assertCount(1, $foreignKeys);
$firstKey = reset($foreignKeys);
$this->assertSame('schema-db(1).child(v2)', $firstKey->table_name);
$this->assertSame(['p_id'], $firstKey->column_name);
$this->assertSame('parent(v1)', $firstKey->foreign_table_name);
$this->assertSame(['id'], $firstKey->foreign_column_name);

$this->db->query('DROP TABLE IF EXISTS "schema-db(1)"."child(v2)"');
$this->db->query('DROP TABLE IF EXISTS "schema-db(1)"."parent(v1)"');
$this->db->query('DETACH DATABASE "schema-db(1)"');
}
}
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