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

Forum Discussion

JSC's avatar
JSC
Icon for Nimbostratus rankNimbostratus
Jul 04, 2017

ASM XSD validation and `choice` element

Hi, we have an issue with XSD validation. choice element doesn't work like expected by the W3C specification (https://www.w3schools.com/xml/el_choice.asp😞 Ex: ...
ASM Advanced WAF
security
Daniel_Varela's avatar
Daniel_Varela
Icon for Employee rankEmployee
Jul 04, 2017

Maybe the min and max ocurrences are per element? try to set a minoccurs to 1 and verify that in your firt example [...] 0[...] the request is blocked.