When you define a CORS rule, the value you enter in the Domain
field must meet certain requirements. Each CORS rule supports a single wildcard to match
incoming Origin headers.
The value you enter in the Domain
field must meet the following
- Begins with HTTP:// or HTTPS://.
- Is a domain pattern or IP address.
- Ends with alphanumeric characters preceded by a period, such as
- Includes at most a single wildcard character immediately following the scheme and
hierarchical portion of the domain pattern.
You can use a single wildcard character (*) in the domain pattern. Use this wildcard
immediately following the scheme and hierarchical portion of the domain pattern, such as
to include all subdomains. The wildcard must
immediately follow the scheme and hierarchical portion of the domain pattern. If you use an
IP address instead of domain pattern, you must enter the full IP address without a
Note: You cannot use multiple wildcards, or specify a wildcard without a domain
pattern. Values such as * or *.* are not supported.
When evaluating the Origin header in a request, ServiceNow prioritizes rules that match the
domain pattern exactly. If no exact match is found, the next closest match is used.
For example, if there are rules for the domain patterns
http://*.mysite.com, a request from
http://alice.blog.mysite.com will match the
Examples of valid and invalid domains
Table 1. Examples