PT-2025-26726 · Mozilla+10 · Firefox+10
Masato Kinugawa
·
Published
2025-06-24
·
Updated
2025-12-03
·
CVE-2025-6429
CVSS v2.0
7.8
High
| Vector | AV:N/AC:L/Au:N/C:N/I:C/A:N |
Name of the Vulnerable Software and Affected Versions:
Firefox versions prior to 140
Firefox ESR versions prior to 128.12
Description:
The issue arises from incorrect URL parsing when handling an
embed tag, potentially rewriting the URL to a specific domain, such as youtube.com, and bypassing security checks that restrict embedding from certain domains.Recommendations:
For Firefox versions prior to 140, update to version 140 or later.
For Firefox ESR versions prior to 128.12, update to version 128.12 or later.
Fix
Improper Encoding or Escaping of Output
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Almalinux
Astra Linux
Centos
Debian
Firefox
Linuxmint
Red Hat
Rocky Linux
Suse
Ubuntu