Package Instance

node-fetch Inefficient Regular Expression Complexity
[node-fetch](https://www.npmjs.com/package/node-fetch) is a light-weight module that brings window.fetch to node.js.

Affected versions of this package are vulnerable to Regular Expression Denial of Service (ReDoS) in the `isOriginPotentiallyTrustworthy()` function in `referrer.js`, when processing a URL string with alternating letters and periods, such as `'http://' + 'a.a.'.repeat(i) + 'a'`.

URL Redirection to Untrusted Site ('Open Redirect')
node-fetch is vulnerable to Exposure of Sensitive Information to an Unauthorized Actor

The `size` option isn't honored after following a redirect in node-fetch
### Impact
Node Fetch did not honor the `size` option after following a redirect, which means that when a content size was over the limit, a `FetchError` would never get thrown and the process would end without failure.

For most people, this fix will have a little or no impact. However, if you are relying on node-fetch to gate files above a size, the impact could be significant, for example: If you don't double-check the size of the data after `fetch()` has completed, your JS thread could get tied up doing work on a large file (DoS) and/or cost you money in computing.

### Patches
We released patched versions for both stable and beta channels:

- For `v2`: 2.6.1
- For `v3`: 3.0.0-beta.9

### Workarounds
None, it is strongly recommended to update as soon as possible.

### For more information
If you have any questions or comments about this advisory:
* Open an issue in [node-fetch](https://github.com/node-fetch/node-fetch/issues/new?assignees=&labels=question&template=support-or-usage.md&title=Question%3A+)
* Contact one of the core maintainers.