projectdiscovery/nuclei · error

unsupported goexec method

Error message

unsupported goexec method

What it means

Sentinel error from the goexec (Windows remote execution) helper library. The GoExecRunner dispatches each module with a per-module method switch: wmi accepts 'command', 'proc' and 'call'; tsch accepts 'demand' and 'create'; dcom accepts only 'mmc'; scmr has no method switch. When req.Method (lowercased, no trim) matches none of the selected module's cases, the runner returns ErrUnsupportedMethod (adapter_goexec.go:136,178,207). The error is stored on the JS result object (result.Error, OK=false) rather than propagated to the JS runtime as an exception.

Source

Thrown at pkg/js/libs/goexec/errors.go:13

package goexec

import "errors"

var (
	ErrMissingAuth             = errors.New("goexec auth is required")
	ErrMissingUsername         = errors.New("goexec username is required for this auth mode")
	ErrMultipleCredentialModes = errors.New("goexec auth selects multiple primary credential modes")
	ErrMissingTarget           = errors.New("goexec target is required")
	ErrMissingCommand          = errors.New("goexec command is required")
	ErrMissingExecutable       = errors.New("goexec executable is required")
	ErrUnsupportedModule       = errors.New("unsupported goexec module")
	ErrUnsupportedMethod       = errors.New("unsupported goexec method")
	ErrUnsupportedOutputMethod = errors.New("unsupported goexec output method")
	ErrNetworkPolicyDenied     = errors.New("target denied by network policy")
	ErrInvalidMethodArguments  = errors.New("invalid goexec method arguments")
	ErrDomainControllerDenied  = errors.New("domain controller denied by network policy")
	ErrProxyDenied             = errors.New("proxy denied by network policy")
	ErrEndpointDenied          = errors.New("endpoint denied by network policy")
)

View on GitHub (pinned to 265b3a3dec)

Solutions

1. Set method to a value supported by the chosen module: wmi -> command | proc | call, tsch -> demand | create, dcom -> mmc
2. Check spelling; matching lowercases the value but does not trim whitespace, so remove leading/trailing spaces
3. Align the template with the goexec helper documentation shipped for your nuclei version

Example fix

// before (js template)
return goexec.Run({target: t, module: 'dcom', method: 'wmiexec', ...});
// after
return goexec.Run({target: t, module: 'dcom', method: 'mmc', ...});

var goexecMethods = map[string][]string{
    "wmi":  {"command", "proc", "call"},
    "tsch": {"demand", "create"},
    "dcom": {"mmc"},
}
func methodSupported(module, method string) bool {
    for _, m := range goexecMethods[strings.ToLower(module)] {
        if m == strings.ToLower(method) {
            return true
        }
    }
    return false
}

func isUnsupportedMethod(err error) bool { return errors.Is(err, goexec.ErrUnsupportedMethod) }

res, err := goexec.Run(req)
if err == nil && res != nil && errors.Is(res.Err, goexec.ErrUnsupportedMethod) { /* adjust method and retry once */ }

When it happens

Trigger: A code-protocol goexec call with Module='wmi' and Method='query' (not command/proc/call); Module='dcom' with any method except 'mmc'; Module='tsch' with Method='run' instead of demand/create.

Common situations: Template author copies a method name from a different module's docs; typo in the method field; nuclei version where a module's supported method set changed and the template was not updated.

Related errors

• unsupported goexec output method
• invalid goexec method arguments
• invalid goexec method arguments: %w
• validation failed for these fields
• no input provider found

AI-assisted analysis of projectdiscovery/nuclei@265b3a3dec (2026-08-15). Data as JSON: /api/errors/9cd5faa55334ce94. Report an issue: GitHub.