Vulnerability Database

309,234

Total vulnerabilities in the database

CVE-2025-6427

An attacker was able to bypass the connect-src directive of a Content Security Policy by manipulating subdocuments. This would have also hidden the connections from the Network tab in Devtools. This vulnerability affects Firefox < 140 and Thunderbird < 140.

  • Published: Jun 24, 2025
  • Updated: Nov 16, 2025
  • CVE: CVE-2025-6427
  • Severity: Critical
  • Exploit:

CVSS v3:

  • Severity: Critical
  • Score: 9.1
  • AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

CWEs: