medium6.5
CVE-2025-5271
Previewing a response in Devtools ignored CSP headers, which could have allowed content injection attacks.
Impact
Previewing a response in Devtools ignored CSP headers, which could have allowed content injection attacks. This vulnerability was fixed in Firefox 139 and Thunderbird 139.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Mozilla | Firefox | before 139.0 |