- If a security issue is present in an implementation, then report it directly to the relevant project.
 - If a security issue is present in a TC39 specification, let us know.
- Include any relevant links to corroborative information, e.g. vulnerability reports, reference IDs, etc.
 
 - If you are unable to determine whether a security issue is implementation-specific, let us know.
 
Report using GitHub by visiting the security advisories page of the relevant repository, such as:
- ECMA-262: ECMAScript® Language Specification
 - ECMA-402: ECMAScript® Internationalization API Specification
 - If you are unable to determine the relevant repository, you can report here.
 
Alternately, send an email to [email protected]
Note
This list is not exhaustive.
| Engine/Runtime | Used In | Link to Report | 
|---|---|---|
| JavaScriptCore | Safari, Bun | Report | 
| SpiderMonkey | Firefox | Report | 
| V8 | Chrome, Chromium, Edge, Node, Deno | Report | 
| Node | Report | |
| Deno | Report | |
| Bun | Report |