AWS WAF URI regex don't match

Question

Hi, I created a Web ACL with one rule to allow traffic only on some enpoint, and the default ACL action is to block requests that don't match the rule.
```
## Rule
Field to Match: URI Path
Regular Expression: /(account|category|post)/ 
Action: ALLOW

##  Default web ACL action for requests that don't match any rules
Action: BLOCK
```
The problem is that the rule match only path with two or more segments, but don't match path with 1 segment.
```
http://api.example.com/account/foo/bar     => MATCH - ALLOW
http://api.example.com/account/foo?bar=baz => MATCH - ALLOW
http://api.example.com/account/foo         => MATCH - ALLOW

http://api.example.com/account             => DON'T MATCH - BLOCK
http://api.example.com/account?foo=bar     => DON'T MATCH - BLOCK
```
What's wrong? I would like the rule matches also path with 1 segment.
Thanks in advance

Answer

Your regex ends with "/" so the last two URLs will not match because "account" in these URL does not end with "/"

Can you try with "/(account|category|post)"?

Thanks

AWS WAF URI regex don't match

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