diff --git a/system/ThirdParty/Kint/Parser/XmlPlugin.php b/system/ThirdParty/Kint/Parser/XmlPlugin.php
index 4e5671fb7273..a5a31abd4361 100644
--- a/system/ThirdParty/Kint/Parser/XmlPlugin.php
+++ b/system/ThirdParty/Kint/Parser/XmlPlugin.php
@@ -113,11 +113,6 @@ protected static function xmlToSimpleXML(string $var, ?string $parent_path): ?ar
     /**
      * Get the DOMDocument info.
      *
-     * The documentation of DOMDocument::loadXML() states that while you can
-     * call it statically, it will give an E_STRICT warning. On my system it
-     * actually gives an E_DEPRECATED warning, but it works so we'll just add
-     * an error-silencing '@' to the access path.
-     *
      * If it errors loading then we wouldn't have gotten this far in the first place.
      *
      * @psalm-param non-empty-string $var         The XML string
diff --git a/system/ThirdParty/Kint/Zval/BlobValue.php b/system/ThirdParty/Kint/Zval/BlobValue.php
index cfee55e60ac8..ff5a6a24cfc9 100644
--- a/system/ThirdParty/Kint/Zval/BlobValue.php
+++ b/system/ThirdParty/Kint/Zval/BlobValue.php
@@ -74,8 +74,11 @@ class BlobValue extends Value
      * windows-125x and iso-8859-x which have practically undetectable
      * differences because they use every single byte available.
      *
-     * This is *NOT* reliable and should not be trusted implicitly. As
-     * with char_encodings, the order of the charsets is significant.
+     * This is *NOT* reliable and should not be trusted implicitly. Since it
+     * works by triggering and suppressing conversion warnings, your error
+     * handler may complain.
+     *
+     * As with char_encodings, the order of the charsets is significant.
      *
      * This depends on the iconv extension
      */
@@ -182,6 +185,8 @@ public static function detectEncoding(string $string)
 
         if (\function_exists('iconv')) {
             foreach (self::$legacy_encodings as $encoding) {
+                // Iconv detection works by triggering
+                // "Detected an illegal character in input string" warnings
                 if (@\iconv($encoding, $encoding, $string) === $string) {
                     return $encoding;
                 }
diff --git a/system/ThirdParty/Kint/Zval/Representation/SplFileInfoRepresentation.php b/system/ThirdParty/Kint/Zval/Representation/SplFileInfoRepresentation.php
index 607877e5aee8..44980d7e359a 100644
--- a/system/ThirdParty/Kint/Zval/Representation/SplFileInfoRepresentation.php
+++ b/system/ThirdParty/Kint/Zval/Representation/SplFileInfoRepresentation.php
@@ -28,6 +28,7 @@
 namespace Kint\Zval\Representation;
 
 use Kint\Utils;
+use RuntimeException;
 use SplFileInfo;
 
 class SplFileInfoRepresentation extends Representation
@@ -53,24 +54,30 @@ public function __construct(SplFileInfo $fileInfo)
     {
         parent::__construct('SplFileInfo');
 
-        if ($fileInfo->getRealPath()) {
-            $this->realpath = $fileInfo->getRealPath();
-            $this->perms = $fileInfo->getPerms();
-            $this->size = $fileInfo->getSize();
-            $this->owner = $fileInfo->getOwner();
-            $this->group = $fileInfo->getGroup();
-            $this->ctime = $fileInfo->getCTime();
-            $this->mtime = $fileInfo->getMTime();
-        }
-
         $this->path = $fileInfo->getPathname();
 
-        $this->is_dir = $fileInfo->isDir();
-        $this->is_file = $fileInfo->isFile();
-        $this->is_link = $fileInfo->isLink();
+        try {
+            if ($fileInfo->getRealPath()) {
+                $this->perms = $fileInfo->getPerms();
+                $this->size = $fileInfo->getSize();
+                $this->owner = $fileInfo->getOwner();
+                $this->group = $fileInfo->getGroup();
+                $this->ctime = $fileInfo->getCTime();
+                $this->mtime = $fileInfo->getMTime();
+                $this->realpath = $fileInfo->getRealPath();
+            }
+
+            $this->is_dir = $fileInfo->isDir();
+            $this->is_file = $fileInfo->isFile();
+            $this->is_link = $fileInfo->isLink();
 
-        if ($this->is_link) {
-            $this->linktarget = $fileInfo->getLinkTarget();
+            if ($this->is_link) {
+                $this->linktarget = $fileInfo->getLinkTarget();
+            }
+        } catch (RuntimeException $e) {
+            if (false === \strpos($e->getMessage(), ' open_basedir ')) {
+                throw $e;
+            }
         }
 
         switch ($this->perms & 0xF000) {
diff --git a/system/ThirdParty/Kint/init.php b/system/ThirdParty/Kint/init.php
index 4c3a22bb500b..7605415b6e6e 100644
--- a/system/ThirdParty/Kint/init.php
+++ b/system/ThirdParty/Kint/init.php
@@ -53,8 +53,12 @@
 if (isset($_SERVER['DOCUMENT_ROOT'])) {
     Kint::$app_root_dirs = [
         $_SERVER['DOCUMENT_ROOT'] => '<ROOT>',
-        \realpath($_SERVER['DOCUMENT_ROOT']) => '<ROOT>',
     ];
+
+    // Suppressed for unreadable document roots (related to open_basedir)
+    if (false !== @\realpath($_SERVER['DOCUMENT_ROOT'])) {
+        Kint::$app_root_dirs[\realpath($_SERVER['DOCUMENT_ROOT'])] = '<ROOT>';
+    }
 }
 
 Utils::composerSkipFlags();
diff --git a/user_guide_src/source/changelogs/v4.3.0.rst b/user_guide_src/source/changelogs/v4.3.0.rst
index 4ea3b567cf68..2fe99ab82722 100644
--- a/user_guide_src/source/changelogs/v4.3.0.rst
+++ b/user_guide_src/source/changelogs/v4.3.0.rst
@@ -322,7 +322,7 @@ Others
 - **Validation:** Added Closure validation rule. See :ref:`validation-using-closure-rule` for details.
 - **Config:** Now you can specify Composer packages to auto-discover manually. See :ref:`Code Modules <modules-specify-composer-packages>`.
 - **Config:** Added ``Config\Session`` class to handle session configuration.
-- **Debug:** Kint has been updated to 5.0.1.
+- **Debug:** Kint has been updated to 5.0.2.
 - **Request:** Added new ``$request->getRawInputVar()`` method to return a specified variable from raw stream. See :ref:`Retrieving Raw data <incomingrequest-retrieving-raw-data>`.
 - **Request:** Added new ``$request->is()`` method to query the request type.
   See :ref:`Determining Request Type <incomingrequest-is>`.