Bug ID 621202: Portal Access: document.write() with very long string as argument may be handled incorrectly.

Last Modified: Aug 19, 2026

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

Known Affected Versions:
11.6.1, 11.6.1 hf1, 11.6.1 hf2, 11.6.2, 11.6.2 hf1, 11.6.3, 11.6.3.1, 11.6.3.2, 11.6.3.3, 11.6.3.4, 11.6.4, 11.6.5, 11.6.5.1, 11.6.5.2, 11.6.5.3

Fixed In:
13.0.0

Opened: Oct 07, 2016

Severity: 3-Major

Symptoms

JavaScript code may include document.write() calls with very long strings (> 60K). In some cases these strings may be rewritten incorrectly.

Impact

rewritten HTML page may not work correctly.

Conditions

- document.write() with very long string as argument. - argument string contains HTML tags with quoted attribute values which include '>' inside.

Workaround

None

Fix Information

Now document.write() calls with long HTML strings are handled correctly by Portal Access.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips