Language: TypeScript
Label: vulnerable
CWE: CWE-352 \u2014 Cross-Site Request Forgery (CSRF)
The web application does not, or can not, sufficiently verify whether a well-formed, valid, consistent request was intentionally provided by the user who submitted the request.

Code:
export const getRegisteredTestServer = (sessionOptions: SessionOptions = null) => {
  const fastifyPassport = new Authenticator()
  fastifyPassport.registerUserSerializer(async (user) => JSON.stringify(user))
  fastifyPassport.registerUserDeserializer(async (serialized: string) => JSON.parse(serialized))

  const server = getTestServer(sessionOptions)
  void server.register(fastifyPassport.initialize())
  void server.register(fastifyPassport.secureSession())

  return { fastifyPassport, server }
}