diff --git a/.github/dependabot.yml b/.github/dependabot.yml
new file mode 100644
index 0000000..b14cfa0
--- /dev/null
+++ b/.github/dependabot.yml
@@ -0,0 +1,12 @@
+version: 2
+updates:
+  - package-ecosystem: "composer"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+    open-pull-requests-limit: 10
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+    open-pull-requests-limit: 10
diff --git a/.github/workflows/plugin-ci-workflow.yml b/.github/workflows/plugin-ci-workflow.yml
index 1780696..02869ae 100644
--- a/.github/workflows/plugin-ci-workflow.yml
+++ b/.github/workflows/plugin-ci-workflow.yml
@@ -86,7 +86,7 @@ jobs:
       run: sudo apt-get update
     
     - name: Install System Dependencies
-      run: sudo apt-get install -y apache2 snmp snmpd rrdtool fping libapache2-mod-php${{ matrix.php }}
+      run: sudo apt-get install -y apache2 snmp snmpd rrdtool fping
     
     - name: Start SNMPD Agent and Test
       run: |
@@ -195,7 +195,9 @@ jobs:
       working-directory: ${{ github.workspace }}/cacti
 
     - name: Run PHPStan at Level 6 on base code outside of Composer due to technical issues
-      run: ./include/vendor/bin/phpstan analyze --level 6 ${{ github.workspace }}/cacti/plugins/maint
+      run: |
+        find ${{ github.workspace }}/cacti/plugins/maint -type f -name '*.php' ! -path '*/tests/*' -print0 |
+          xargs -0 ./include/vendor/bin/phpstan analyze --level 6
       working-directory: ${{ github.workspace }}/cacti
 
     - name: Run Cacti Poller
diff --git a/.gitignore b/.gitignore
index eb71606..32791f0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -20,3 +20,4 @@
 # +-------------------------------------------------------------------------+
 
 locales/po/*.mo
+.omc/
diff --git a/composer.json b/composer.json
new file mode 100644
index 0000000..54c451d
--- /dev/null
+++ b/composer.json
@@ -0,0 +1,21 @@
+{
+    "name": "cacti/plugin_maint",
+    "description": "plugin_maint plugin for Cacti",
+    "license": "GPL-2.0-or-later",
+    "require-dev": {
+        "pestphp/pest": "^1.23"
+    },
+    "config": {
+        "allow-plugins": {
+            "pestphp/pest-plugin": true
+        }
+    },
+    "autoload-dev": {
+        "files": [
+            "tests/bootstrap.php"
+        ]
+    },
+    "scripts": {
+        "test": "vendor/bin/pest"
+    }
+}
diff --git a/maint.php b/maint.php
index af10520..a855465 100644
--- a/maint.php
+++ b/maint.php
@@ -924,9 +924,9 @@ function changemaintType () {
 function schedules(): void {
 	global $actions, $maint_types, $maint_intervals, $yesno;
 
-	$schedules = db_fetch_assoc('SELECT *
+	$schedules = db_fetch_assoc_prepared('SELECT *
 		FROM plugin_maint_schedules
-		ORDER BY name');
+		ORDER BY name', []);
 
 	form_start('maint.php', 'chk');
 
@@ -1134,10 +1134,10 @@ function clearFilter() {
 							<option value='<?php print MAINT_HOST_FILTER_ANY ?>' <?php if (get_request_var('site_id') == MAINT_HOST_FILTER_ANY) {?> selected<?php }?>><?php print __('Any', 'maint'); ?></option>
 							<option value='<?php print MAINT_HOST_FILTER_NONE ?>' <?php if (get_request_var('site_id') == MAINT_HOST_FILTER_NONE) {?> selected<?php }?>><?php print __('None', 'maint'); ?></option>
 							<?php
-							$sites = db_fetch_assoc('SELECT id, name
+							$sites = db_fetch_assoc_prepared('SELECT id, name
 								FROM sites
 								WHERE id IN (SELECT site_id FROM host)
-								ORDER BY name');
+								ORDER BY name', []);
 
 	if (cacti_sizeof($sites)) {
 		foreach ($sites as $site) {
@@ -1158,9 +1158,9 @@ function clearFilter() {
 						<select id='poller_id'>
 							<option value='<?php print MAINT_HOST_FILTER_ANY ?>' <?php if (get_request_var('poller_id') == MAINT_HOST_FILTER_ANY) {?> selected<?php }?>><?php print __('Any', 'maint'); ?></option>
 							<?php
-	$pollers = db_fetch_assoc('SELECT id, name
+	$pollers = db_fetch_assoc_prepared('SELECT id, name
 								FROM poller
-								ORDER BY name');
+								ORDER BY name', []);
 
 	if (cacti_sizeof($pollers)) {
 		foreach ($pollers as $poller) {
diff --git a/setup.php b/setup.php
index 1d3f18e..16c9d59 100644
--- a/setup.php
+++ b/setup.php
@@ -298,9 +298,9 @@ function maint_device_action_prepare(array $save): array {
 		}
 
 		// Load schedules to choose from
-		$schedules = db_fetch_assoc('SELECT id, name, enabled, mtype, stime, etime, minterval
+		$schedules = db_fetch_assoc_prepared('SELECT id, name, enabled, mtype, stime, etime, minterval
 			FROM plugin_maint_schedules
-			ORDER BY name');
+			ORDER BY name', []);
 
 		$select = "<select name='maint_schedule_id' style='min-width:360px'>";
 
diff --git a/tests/Pest.php b/tests/Pest.php
new file mode 100644
index 0000000..675e214
--- /dev/null
+++ b/tests/Pest.php
@@ -0,0 +1,12 @@
+<?php
+/*
+ +-------------------------------------------------------------------------+
+ | Copyright (C) 2004-2026 The Cacti Group                                 |
+ +-------------------------------------------------------------------------+
+ | Cacti: The Complete RRDtool-based Graphing Solution                     |
+ +-------------------------------------------------------------------------+
+*/
+
+// Pest configuration file.
+
+require_once __DIR__ . '/bootstrap.php';
diff --git a/tests/Security/Php74CompatibilityTest.php b/tests/Security/Php74CompatibilityTest.php
new file mode 100644
index 0000000..b9304f0
--- /dev/null
+++ b/tests/Security/Php74CompatibilityTest.php
@@ -0,0 +1,77 @@
+<?php
+/*
+ +-------------------------------------------------------------------------+
+ | Copyright (C) 2004-2026 The Cacti Group                                 |
+ +-------------------------------------------------------------------------+
+ | Cacti: The Complete RRDtool-based Graphing Solution                     |
+ +-------------------------------------------------------------------------+
+*/
+
+/*
+ * Verify plugin source files do not use PHP 8.0+ syntax.
+ * Cacti 1.2.x plugins must remain compatible with PHP 7.4.
+ */
+
+describe('PHP 7.4 compatibility in maint', function () {
+	$files = [
+		'functions.php',
+		'maint.php',
+		'setup.php',
+	];
+
+	$readRequiredFile = function (string $relativeFile): string {
+		$path = realpath(__DIR__ . '/../../' . $relativeFile);
+
+		if ($path === false) {
+			throw new RuntimeException("Unable to resolve required file: {$relativeFile}");
+		}
+
+		$contents = file_get_contents($path);
+
+		if ($contents === false) {
+			throw new RuntimeException("Unable to read required file: {$relativeFile}");
+		}
+
+		return $contents;
+	};
+
+	it('does not use str_contains (PHP 8.0)', function () use ($files, $readRequiredFile) {
+		foreach ($files as $relativeFile) {
+			$contents = $readRequiredFile($relativeFile);
+
+			expect(preg_match('/\bstr_contains\s*\(/', $contents))->toBe(0,
+				"{$relativeFile} uses str_contains() which requires PHP 8.0"
+			);
+		}
+	});
+
+	it('does not use str_starts_with (PHP 8.0)', function () use ($files, $readRequiredFile) {
+		foreach ($files as $relativeFile) {
+			$contents = $readRequiredFile($relativeFile);
+
+			expect(preg_match('/\bstr_starts_with\s*\(/', $contents))->toBe(0,
+				"{$relativeFile} uses str_starts_with() which requires PHP 8.0"
+			);
+		}
+	});
+
+	it('does not use str_ends_with (PHP 8.0)', function () use ($files, $readRequiredFile) {
+		foreach ($files as $relativeFile) {
+			$contents = $readRequiredFile($relativeFile);
+
+			expect(preg_match('/\bstr_ends_with\s*\(/', $contents))->toBe(0,
+				"{$relativeFile} uses str_ends_with() which requires PHP 8.0"
+			);
+		}
+	});
+
+	it('does not use nullsafe operator (PHP 8.0)', function () use ($files, $readRequiredFile) {
+		foreach ($files as $relativeFile) {
+			$contents = $readRequiredFile($relativeFile);
+
+			expect(preg_match('/\?->/', $contents))->toBe(0,
+				"{$relativeFile} uses nullsafe operator which requires PHP 8.0"
+			);
+		}
+	});
+});
diff --git a/tests/Security/PreparedStatementConsistencyTest.php b/tests/Security/PreparedStatementConsistencyTest.php
new file mode 100644
index 0000000..a5659a5
--- /dev/null
+++ b/tests/Security/PreparedStatementConsistencyTest.php
@@ -0,0 +1,59 @@
+<?php
+/*
+ +-------------------------------------------------------------------------+
+ | Copyright (C) 2004-2026 The Cacti Group                                 |
+ +-------------------------------------------------------------------------+
+ | Cacti: The Complete RRDtool-based Graphing Solution                     |
+ +-------------------------------------------------------------------------+
+*/
+
+/*
+ * Verify migrated files use prepared DB helpers exclusively.
+ * Catches regressions where raw db_execute/db_fetch_* calls creep back in.
+ */
+
+describe('prepared statement consistency in maint', function () {
+	it('uses prepared DB helpers in all plugin files', function () {
+		$targetFiles = [
+		'functions.php',
+		'maint.php',
+		'setup.php',
+		];
+
+		$rawPattern      = '/\bdb_(?:execute|fetch_row|fetch_assoc|fetch_cell)\s*\(/';
+		$preparedPattern = '/\bdb_(?:execute|fetch_row|fetch_assoc|fetch_cell)_prepared\s*\(/';
+
+		foreach ($targetFiles as $relativeFile) {
+			$path = realpath(__DIR__ . '/../../' . $relativeFile);
+
+			if ($path === false) {
+				throw new RuntimeException("Unable to resolve required plugin file: {$relativeFile}");
+			}
+
+			$contents = file_get_contents($path);
+
+			if ($contents === false) {
+				throw new RuntimeException("Unable to read required plugin file: {$relativeFile}");
+			}
+
+			$lines                   = explode("\n", $contents);
+			$rawCallsOutsideComments = 0;
+
+			foreach ($lines as $line) {
+				$trimmed = ltrim($line);
+
+				if (strpos($trimmed, '//') === 0 || strpos($trimmed, '*') === 0 || strpos($trimmed, '#') === 0) {
+					continue;
+				}
+
+				if (preg_match($rawPattern, $line) && !preg_match($preparedPattern, $line)) {
+					$rawCallsOutsideComments++;
+				}
+			}
+
+			expect($rawCallsOutsideComments)->toBe(0,
+				"File {$relativeFile} contains raw (unprepared) DB calls"
+			);
+		}
+	});
+});
diff --git a/tests/Security/SetupStructureTest.php b/tests/Security/SetupStructureTest.php
new file mode 100644
index 0000000..c8a6c0b
--- /dev/null
+++ b/tests/Security/SetupStructureTest.php
@@ -0,0 +1,44 @@
+<?php
+/*
+ +-------------------------------------------------------------------------+
+ | Copyright (C) 2004-2026 The Cacti Group                                 |
+ +-------------------------------------------------------------------------+
+ | Cacti: The Complete RRDtool-based Graphing Solution                     |
+ +-------------------------------------------------------------------------+
+*/
+
+// Verify setup.php defines required plugin hooks and info function.
+
+describe('maint setup.php structure', function () {
+	$setupPath = realpath(__DIR__ . '/../../setup.php');
+	expect($setupPath)->not->toBeFalse();
+
+	$source = file_get_contents($setupPath);
+	expect($source)->not->toBeFalse();
+
+	$infoPath = realpath(__DIR__ . '/../../INFO');
+	expect($infoPath)->not->toBeFalse();
+
+	$info = parse_ini_file($infoPath, true);
+	expect($info)->not->toBeFalse();
+
+	it('defines plugin_maint_install function', function () use ($source) {
+		expect($source)->toContain('function plugin_maint_install');
+	});
+
+	it('defines plugin_maint_version function', function () use ($source) {
+		expect($source)->toContain('function plugin_maint_version');
+	});
+
+	it('defines plugin_maint_uninstall function', function () use ($source) {
+		expect($source)->toContain('function plugin_maint_uninstall');
+	});
+
+	it('declares a name in INFO', function () use ($info) {
+		expect($info['info'])->toHaveKey('name');
+	});
+
+	it('declares a version in INFO', function () use ($info) {
+		expect($info['info'])->toHaveKey('version');
+	});
+});
diff --git a/tests/bootstrap.php b/tests/bootstrap.php
new file mode 100644
index 0000000..bb20bc6
--- /dev/null
+++ b/tests/bootstrap.php
@@ -0,0 +1,202 @@
+<?php
+/*
+ +-------------------------------------------------------------------------+
+ | Copyright (C) 2004-2026 The Cacti Group                                 |
+ +-------------------------------------------------------------------------+
+ | Cacti: The Complete RRDtool-based Graphing Solution                     |
+ +-------------------------------------------------------------------------+
+*/
+
+/*
+ * Test bootstrap: stub Cacti framework functions so plugin code
+ * can be loaded in isolation without the full Cacti application.
+ */
+
+$GLOBALS['__test_db_calls'] = [];
+
+if (!function_exists('db_execute')) {
+	function db_execute($sql) {
+		$GLOBALS['__test_db_calls'][] = ['fn' => 'db_execute', 'sql' => $sql, 'params' => []];
+
+		return true;
+	}
+}
+
+if (!function_exists('db_execute_prepared')) {
+	function db_execute_prepared($sql, $params = []) {
+		$GLOBALS['__test_db_calls'][] = ['fn' => 'db_execute_prepared', 'sql' => $sql, 'params' => $params];
+
+		return true;
+	}
+}
+
+if (!function_exists('db_fetch_assoc')) {
+	function db_fetch_assoc($sql) {
+		return [];
+	}
+}
+
+if (!function_exists('db_fetch_assoc_prepared')) {
+	function db_fetch_assoc_prepared($sql, $params = []) {
+		return [];
+	}
+}
+
+if (!function_exists('db_fetch_row')) {
+	function db_fetch_row($sql) {
+		return [];
+	}
+}
+
+if (!function_exists('db_fetch_row_prepared')) {
+	function db_fetch_row_prepared($sql, $params = []) {
+		return [];
+	}
+}
+
+if (!function_exists('db_fetch_cell')) {
+	function db_fetch_cell($sql) {
+		return '';
+	}
+}
+
+if (!function_exists('db_fetch_cell_prepared')) {
+	function db_fetch_cell_prepared($sql, $params = []) {
+		return '';
+	}
+}
+
+if (!function_exists('db_index_exists')) {
+	function db_index_exists($table, $index) {
+		return false;
+	}
+}
+
+if (!function_exists('db_column_exists')) {
+	function db_column_exists($table, $column) {
+		return false;
+	}
+}
+
+if (!function_exists('api_plugin_db_add_column')) {
+	function api_plugin_db_add_column($plugin, $table, $data) {
+		return true;
+	}
+}
+
+if (!function_exists('api_plugin_db_table_create')) {
+	function api_plugin_db_table_create($plugin, $table, $data) {
+		return true;
+	}
+}
+
+if (!function_exists('read_config_option')) {
+	function read_config_option($name, $force = false) {
+		return '';
+	}
+}
+
+if (!function_exists('set_config_option')) {
+	function set_config_option($name, $value) {
+	}
+}
+
+if (!function_exists('html_escape')) {
+	function html_escape($string) {
+		return htmlspecialchars($string, ENT_QUOTES | ENT_HTML5, 'UTF-8');
+	}
+}
+
+if (!function_exists('__')) {
+	function __($text, $domain = '') {
+		return $text;
+	}
+}
+
+if (!function_exists('__esc')) {
+	function __esc($text, $domain = '') {
+		return htmlspecialchars($text, ENT_QUOTES | ENT_HTML5, 'UTF-8');
+	}
+}
+
+if (!function_exists('cacti_log')) {
+	function cacti_log($message, $also_print = false, $log_type = '', $level = 0) {
+	}
+}
+
+if (!function_exists('cacti_sizeof')) {
+	function cacti_sizeof($array) {
+		return is_array($array) ? count($array) : 0;
+	}
+}
+
+if (!function_exists('is_realm_allowed')) {
+	function is_realm_allowed($realm) {
+		return true;
+	}
+}
+
+if (!function_exists('raise_message')) {
+	function raise_message($id, $text = '', $level = 0) {
+	}
+}
+
+if (!function_exists('get_request_var')) {
+	function get_request_var($name) {
+		return '';
+	}
+}
+
+if (!function_exists('get_nfilter_request_var')) {
+	function get_nfilter_request_var($name) {
+		return '';
+	}
+}
+
+if (!function_exists('get_filter_request_var')) {
+	function get_filter_request_var($name) {
+		return '';
+	}
+}
+
+if (!function_exists('form_input_validate')) {
+	function form_input_validate($value, $name, $regex, $optional, $error) {
+		return $value;
+	}
+}
+
+if (!function_exists('is_error_message')) {
+	function is_error_message() {
+		return false;
+	}
+}
+
+if (!function_exists('sql_save')) {
+	function sql_save($array, $table, $key = 'id') {
+		return isset($array['id']) ? $array['id'] : 1;
+	}
+}
+
+if (!defined('CACTI_PATH_BASE')) {
+	define('CACTI_PATH_BASE', '/var/www/html/cacti');
+}
+
+if (!defined('POLLER_VERBOSITY_LOW')) {
+	define('POLLER_VERBOSITY_LOW', 2);
+}
+
+if (!defined('POLLER_VERBOSITY_MEDIUM')) {
+	define('POLLER_VERBOSITY_MEDIUM', 3);
+}
+
+if (!defined('POLLER_VERBOSITY_DEBUG')) {
+	define('POLLER_VERBOSITY_DEBUG', 5);
+}
+
+if (!defined('POLLER_VERBOSITY_NONE')) {
+	define('POLLER_VERBOSITY_NONE', 6);
+}
+
+if (!defined('MESSAGE_LEVEL_ERROR')) {
+	define('MESSAGE_LEVEL_ERROR', 1);
+}