Bug ID 518550: Incorrect value of form action attribute inside 'onsubmit' event handler in some cases

Last Modified: Sep 13, 2023

Affected Product(s):
BIG-IP APM(all modules)

Known Affected Versions:
11.4.1, 11.6.0, 12.0.0, 12.1.0 HF1, 12.1.0 HF2, 12.1.1 HF1, 12.1.1 HF2, 12.1.2 HF1, 12.1.2 HF2

Fixed In:
12.1.0, 12.0.0 HF1, 11.6.1, 11.5.4 HF2, 11.4.1 HF10

Opened: Apr 16, 2015

Severity: 3-Major

Related Article: K42153852


Incorrect value of 'action' form attribute may be used inside 'onsubmit' event handlers if original 'action' is an absolute path.


Web application may work incorrectly.


HTML form with absolute path in 'action' attribute; 'onsubmit' event handler for this form.


There is no general workaround. But if 'action' value can be converted to relative path or to full URL (with host), this can be done using iRule.

Fix Information

Now value of form 'action' attribute is correct inside event handlers.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips