Invalid language code causes Internal Server Error

[slubar]

For the POST /api/cve/:id/cna endpoint, setting the description lang to "eng" causes a 500 error. Update this, and all other 500 errors being thrown for failing validation to 400 "bad input" errors. If possible, return additional failure information from the validator

Sample JSON for the container to use for testing:
{"cnaContainer" : {
"descriptions" : [ { "lang" : "eng", "value" : "One more CVE Services test CVE Record post." } ],
"affected" : [ { "versions" : [ { "version" : "1.1.0", "status" : "affected" } ],
"product" : "CVE Services product number two", "vendor" : "MITRE" } ],
"references" : [ { "url" : "http://mitre.org" } ],
"providerMetadata" : { "orgId" : "466e066c-d384-4b8a-8b15-067d9c22c5af",
"shortName" : "mitre",
"dateUpdated" : "2022-04-28T21:30:13.057Z"
}
}}

[jdaigneau5]

Look into this package: https://www.npmjs.com/package/bcp47-validate