Bug #77074 [NEW]: david@grudl.com

From: david at grudl dot com Operating system: PHP version: 7.3.0RC4 Package: Output Control Bug Type: Bug Bug description:david@grudl.com Description: ------------ Displaying error messages is vulnerable to XSS, although the 'html_errors' is enabled. Solution is to convert especial charactes < & in error message (ie to use htmlspecialchars) Test script: --------------- <?php echo ${'<script>alert(123);</script>'}; Expected result: ---------------- In web browser it should not pop up the alert window, but it should report: "Notice: Undefined variable: <script>alert(123);</script> in test.php on line 3 -- Edit bug report at https://bugs.php.net/bug.php?id=77074&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=77074&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=77074&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=77074&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=77074&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=77074&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=77074&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=77074&r=needscript Try newer version: https://bugs.php.net/fix.php?id=77074&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=77074&r=support Expected behavior: https://bugs.php.net/fix.php?id=77074&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=77074&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=77074&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=77074&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=77074&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=77074&r=dst IIS Stability: https://bugs.php.net/fix.php?id=77074&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=77074&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=77074&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=77074&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=77074&r=mysqlcfg