projectdiscovery/nuclei · error

no servers found in openapi schema

Error message

no servers found in openapi schema

What it means

Error "no servers found in openapi schema" thrown in projectdiscovery/nuclei.

Source

Thrown at pkg/input/formats/openapi/generator.go:37

	"github.com/projectdiscovery/nuclei/v3/pkg/catalog/config"
	"github.com/projectdiscovery/nuclei/v3/pkg/input/formats"
	httpTypes "github.com/projectdiscovery/nuclei/v3/pkg/input/types"
	"github.com/projectdiscovery/nuclei/v3/pkg/types"
	"github.com/projectdiscovery/nuclei/v3/pkg/utils/json"
	"github.com/projectdiscovery/utils/errkit"
	"github.com/projectdiscovery/utils/generic"
	mapsutil "github.com/projectdiscovery/utils/maps"
)

const (
	globalAuth                 = "globalAuth"
	DEFAULT_HTTP_SCHEME_HEADER = "Authorization"
)

// GenerateRequestsFromSchema generates http requests from an OpenAPI 3.0 document object
func GenerateRequestsFromSchema(schema *openapi3.T, opts formats.InputFormatOptions, callback formats.ParseReqRespCallback) error {
	if len(schema.Servers) == 0 {
		return errors.New("no servers found in openapi schema")
	}

	// new set of globalParams obtained from security schemes
	globalParams := openapi3.NewParameters()

	if len(schema.Security) > 0 {
		params, err := GetGlobalParamsForSecurityRequirement(schema, &schema.Security)
		if err != nil {
			return err
		}
		globalParams = append(globalParams, params...)
	}

	// validate global param requirements
	for _, param := range globalParams {
		if val, ok := opts.Variables[param.Value.Name]; ok {
			param.Value.Example = val
		} else {

View on GitHub (pinned to 265b3a3dec)

When it happens

Trigger: Thrown at pkg/input/formats/openapi/generator.go:37 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of projectdiscovery/nuclei@265b3a3dec (2026-08-15). Data as JSON: /api/errors/a1624bd768c3e404. Report an issue: GitHub.