Security Advisory

CVE-2025-6429

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2025-06-24 12:28:00

Last updated 2026-04-13 14:30:42

Assigner mozilla

State PUBLISHED

Description

Firefox could have incorrectly parsed a URL and rewritten it to the youtube.com domain when parsing the URL specified in an `embed` tag. This could have bypassed website security checks that restricted which domains users were allowed to embed. This vulnerability was fixed in Firefox 140, Firefox ESR 128.12, Thunderbird 140, and Thunderbird 128.12.

← Browse all CVEs View on cve.org ↗