PT-2025-41900 · Mozilla+9 · Firefox+11
Masato Kinugawa
·
Published
2025-10-14
·
Updated
2026-02-02
·
CVE-2025-11712
CVSS v2.0
6.4
Medium
| Vector | AV:N/AC:L/Au:N/C:P/I:P/A:N |
Name of the Vulnerable Software and Affected Versions
Firefox versions prior to 144
Firefox ESR versions prior to 140.4
Thunderbird versions prior to 144
Thunderbird versions prior to 140.4
Description
A malicious webpage could exploit the
type attribute of an OBJECT tag to bypass standard browser security measures when handling web resources lacking a content-type header. This could lead to a cross-site scripting (XSS) attack on websites that do not securely serve files without specifying a content-type.Recommendations
Update Firefox to version 144 or later.
Update Firefox ESR to version 140.4 or later.
Update Thunderbird to version 144 or later.
Update Thunderbird to version 140.4 or later.
Fix
Improper Encoding or Escaping of Output
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Almalinux
Centos
Debian
Firefox
Firefox Esr
Linuxmint
Red Hat
Rocky Linux
Suse
Thunderbird
Ubuntu