Bug ID 635999: Portal Access: URL with backslashes in query/fragment parts may not work correctly

Last Modified: Nov 07, 2022

Bug Tracker

Affected Product:  See more info
BIG-IP APM(all modules)

Known Affected Versions:
12.0.0, 12.0.0 HF1, 12.0.0 HF2, 12.0.0 HF3, 12.0.0 HF4, 12.1.0, 12.1.0 HF1, 12.1.0 HF2, 12.1.1, 12.1.1 HF1, 12.1.1 HF2, 12.1.2, 12.1.2 HF1, 12.1.2 HF2, 12.1.3,,,,,,,, 12.1.4,, 12.1.5,,,, 12.1.6, 13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.0.1

Fixed In:

Opened: Dec 28, 2016
Severity: 3-Major


If a URL contains backslashes in the query and/or in fragment parts, it may not be handled correctly in some cases for Internet Explorer and Chrome.


Query and/or fragment part of this URL may be mangled by replacing backslashes. In the example, the query part may be converted to the following string: ?param=aaa/bbb. This may lead to incorrect behavior of web applications.


- HTML page with dynamically generated URL with backslashes in query and/or fragment parts, for example: http://example.com/some/file.html?param=aaa\bbb. - Internet Explorer or Chrome browser.


Use an iRule to correct query/fragment part string.

Fix Information

Now URLs with backslashes in query and/or fragment parts are handled correctly by Portal Access.

Behavior Change