Bug ID 957965: Request is blocked by 'CSRF attack detected' violation with 'CSRF token absent'

Last Modified: Sep 13, 2023

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

Known Affected Versions:
15.1.2,, 15.1.3,, 16.0.0,, 16.0.1,,

Fixed In:
16.1.0, 15.1.4

Opened: Oct 21, 2020

Severity: 2-Critical


Request is blocked by 'CSRF attack detected' violation.


False positive request blocking occurs.


- ASM provisioned - ASM policy attached to a virtual server - CSRF protection enabled in an ASM policy


Disable 'CSRF attack detected' violation in the ASM policy.

Fix Information

'CSRF attack detected' now works as expected.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips