JDK-8147555 : Document that % and " characters are not supported in keys and values of a property for Java Web Start
  • Type: Bug
  • Component: docs
  • Affected Version: 8u51,9
  • Priority: P4
  • Status: Resolved
  • Resolution: Fixed
  • Submitted: 2016-01-18
  • Updated: 2019-01-14
  • Resolved: 2018-08-08
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JDK 8
8u201 b01Fixed
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Description
For Java Web Start application, neither key nor value of a property is allowed to contain characters ���%��� and ���"���. Such properties are considered insecure since using either character could result in incorrect command line parsing. See JDK-8136475 for more details.

Yet this limitation is not documented in JNLP File Syntax documentation at https://docs.oracle.com/javase/8/docs/technotes/guides/javaws/developersguide/syntax.html
Comments
No, there are too many other high priority items that take precedence. Putting it back to 9-pool to be addressed post-GA.
11-08-2017

Does this one get fixed for JDK 9 GA?
11-08-2017