| Package | Affected versions | Patched versions |
|---|---|---|
| firefox | ≤ 55.0.3 |
WebExtensions could use popups and panels in the extension UI to load an "about:" privileged URL, violating security checks that disallow this behavior. This vulnerability affects Firefox < 56.
Running one of these products? Scan your site to see whether it exposes a vulnerable version.
Scan my site free