Mar 27, 2026 - For details about updated CVE-2025-53521 (BIG-IP APM vulnerability), refer to K000156741.

Forum Discussion

Amr_Ali's avatar
Amr_Ali
Icon for MVP rankMVP
Aug 09, 2023

Error: SyntaxError: Unexpected token Error

dears, I have an issue with one of my web applications, after users check on the tab under a specific URL this error appears ( Error: SyntaxError: Unexpected token '<', "<html><hea"... is not valid ...
application delivery
F5 WAF
JRahm's avatar
JRahm
Icon for Admin rankAdmin
Aug 15, 2023

Hi Amr_Ali what type of policy is applied to the VS? If WAF policy, are you able to find in the devtools the ajax call and see if there is an WAF support id?