TYPO3 Core

Following the discussion with idna_convert guys, it is linkvalidator, who calls a wrong method. Here is a patch:

--- a/typo3/sysext/linkvalidator/Classes/Linktype/ExternalLinktype.php
+++ b/typo3/sysext/linkvalidator/Classes/Linktype/ExternalLinktype.php
@@ -209,7 +209,7 @@
     protected function preprocessUrl(string $url): string
     {
         try {
-            return (new IdnaConvert())->encode($url);
+            return (new IdnaConvert())->encodeUri($url);
         } catch (\Exception $e) {
             // in case of any error, return empty url.
             $this->errorParams['errorType'] = 'exception';

The fix is contributed by the University of Basel.

Patch set 2 for branch 9.5 of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/61495

Patch set 3 for branch 9.5 of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/61495

Patch set 1 for branch TYPO3_8-7 of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/61592