| Package | Affected versions | Patched versions |
|---|---|---|
| firefox | < 55.0 | 55.0 |
If a server sends two Strict-Transport-Security (STS) headers for a single connection, they will be rejected as invalid and HTTP Strict Transport Security (HSTS) will not be enabled for the connection. This vulnerability affects Firefox < 55.
Running one of these products? Scan your site to see whether it exposes a vulnerable version.
Scan my site free