Most vulnerably WAF vendors for bypasses at the 1st week of October.
logo Cloudflare

64 bypass issues 3 XSS
2 RCE
logo Mod_security

18 bypass issues 1 SQL injection
1 RCE
logo Akamai

7 bypass issues 2 SSRF

We also notified about 1 other vulnerable vendor this week, look at the full list.