projectdiscovery/nuclei · error

dialers not initialized for %s

Error message

dialers not initialized for %s

What it means

Error "dialers not initialized for %s" thrown in projectdiscovery/nuclei.

Source

Thrown at pkg/js/libs/postgres/postgres.go:50

// If connection is unsuccessful, it returns false and error.
// @example
// ```javascript
// const postgres = require('nuclei/postgres');
// const isPostgres = postgres.IsPostgres('acme.com', 5432);
// ```
func (c *PGClient) IsPostgres(ctx context.Context, host string, port int) (bool, error) {
	executionId := ctx.Value("executionId").(string)
	// todo: why this is exposed? Service fingerprint should be automatic
	return memoizedisPostgres(ctx, executionId, host, port)
}

// @memo
func isPostgres(ctx context.Context, executionId string, host string, port int) (bool, error) {
	timeout := 10 * time.Second

	dialer := protocolstate.GetDialersWithId(executionId)
	if dialer == nil {
		return false, fmt.Errorf("dialers not initialized for %s", executionId)
	}

	conn, err := dialer.Fastdialer.Dial(ctx, "tcp", fmt.Sprintf("%s:%d", host, port))
	if err != nil {
		return false, err
	}
	defer func() {
		_ = conn.Close()
	}()

	_ = conn.SetDeadline(time.Now().Add(timeout))

	plugin := &postgres.POSTGRESPlugin{}
	service, err := plugin.Run(conn, timeout, plugins.Target{Host: host})
	if err != nil {
		return false, err
	}
	if service == nil {

View on GitHub (pinned to 265b3a3dec)

When it happens

Trigger: Thrown at pkg/js/libs/postgres/postgres.go:50 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/538d3c3e82b02e78. Report an issue: GitHub.