Security Advisory

CVE-2025-6427

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2025-06-24 12:28:01

Last updated 2026-04-13 14:31:00

Assigner mozilla

State PUBLISHED

Description

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 was fixed in Firefox 140 and Thunderbird 140.

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