[6.0] Fix emailToPunycode() throws "Prohibited input U+0000005C" with backslash before quote

janschoenherr · janschoenherr · commit ca1db31ec7a5 · 2025-11-18T08:44:29.000+01:00
Resolves #46356
diff --git a/libraries/src/Filter/InputFilter.php b/libraries/src/Filter/InputFilter.php
@@ -151,8 +151,10 @@ public function emailToPunycode($text)
 
         if (preg_match_all($pattern, $text, $matches)) {
             foreach ($matches[0] as $match) {
-                $match  = (string) str_replace(['?', '"'], '', $match);
-                $text   = (string) str_replace($match, PunycodeHelper::emailToPunycode($match), $text);
+                try {
+                    $match = (string) str_replace(['?', '"'], '', $match);
+                    $text  = (string) str_replace($match, PunycodeHelper::emailToPunycode($match), $text);
+                } catch (\Exception) {}
             }
         }
 

Original file line number	Diff line number	Diff line change
`@@ -151,8 +151,10 @@ public function emailToPunycode($text)`
`151`	`151`
`152`	`152`	`if (preg_match_all($pattern, $text, $matches)) {`
`153`	`153`	`foreach ($matches[0] as $match) {`
`154`		`- $match = (string) str_replace(['?', '"'], '', $match);`
`155`		`- $text = (string) str_replace($match, PunycodeHelper::emailToPunycode($match), $text);`
	`154`	`+ try {`
	`155`	`+ $match = (string) str_replace(['?', '"'], '', $match);`
	`156`	`+ $text = (string) str_replace($match, PunycodeHelper::emailToPunycode($match), $text);`
	`157`	`+ } catch (\Exception) {}`
`156`	`158`	`}`
`157`	`159`	`}`
`158`	`160`