diff --git a/classes/local/outagelib.php b/classes/local/outagelib.php
index 77f8280..15c40c9 100644
--- a/classes/local/outagelib.php
+++ b/classes/local/outagelib.php
@@ -267,6 +267,10 @@ class outagelib {
         // single-quotes (and double for the sake of it) are present otherwise it would break the code.
         $allowedips = addslashes($allowedips);
 
+        // Escape the access key before substitution into the PHP literal to prevent
+        // code injection via a maliciously crafted access key value.
+        $accesskey = addslashes((string)$accesskey);
+
         $cookiesecure = is_moodle_cookie_secure();
 
         // Since Moodle 4.3 cookiehttponly is default to true and this CFG is not set.
diff --git a/version.php b/version.php
index ac32760..df16521 100644
--- a/version.php
+++ b/version.php
@@ -28,8 +28,8 @@
 defined('MOODLE_INTERNAL') || die();
 
 $plugin->component = "auth_outage";
-$plugin->version = 2024081905;                  // The current plugin version (Date: YYYYMMDDXX).
-$plugin->release = 2024081905;                  // Human-readable release information.
+$plugin->version = 2024081906;                  // The current plugin version (Date: YYYYMMDDXX).
+$plugin->release = 2024081906;                  // Human-readable release information.
 $plugin->requires = 2017111309;                 // 2017111309 = T13, but this really requires 3.9 and higher.
 $plugin->maturity = MATURITY_STABLE;            // Suitable for PRODUCTION environments!
 $plugin->supported = [39, 405];                 // A range of branch numbers of supported moodle versions.