CVE-2025-6430

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2025-6430
When a file download is specified via the `Content-Disposition` header, that directive would be ignored if the file was included via a `&lt;embed&gt;` or `&lt;object&gt;` tag, potentially making a website vulnerable to a cross-site scripting attack. This vulnerability affects Firefox < 140 and Firefox ESR < 128.12.

6.1 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References
Link Resource
https://bugzilla.mozilla.org/show_bug.cgi?id=1971140 Permissions Required
https://www.mozilla.org/security/advisories/mfsa2025-51/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-53/ Vendor Advisory
Configurations

Configuration 1 (hide)

OR cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*
cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*
History

03 Jul 2025, 16:43

Type Values Removed Values Added
First Time Mozilla firefox
Mozilla
References () https://bugzilla.mozilla.org/show_bug.cgi?id=1971140 - () https://bugzilla.mozilla.org/show_bug.cgi?id=1971140 - Permissions Required
References () https://www.mozilla.org/security/advisories/mfsa2025-51/ - () https://www.mozilla.org/security/advisories/mfsa2025-51/ - Vendor Advisory
References () https://www.mozilla.org/security/advisories/mfsa2025-53/ - () https://www.mozilla.org/security/advisories/mfsa2025-53/ - Vendor Advisory
CPE cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*
cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*

25 Jun 2025, 15:15

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 6.1
CWE CWE-79
Summary
  • (es) Cuando se especifica la descarga de un archivo mediante el encabezado `Content-Disposition`, esta directiva se ignora si el archivo se incluye mediante una etiqueta `` u ``, lo que podría hacer que un sitio web sea vulnerable a un ataque de cross-site scripting. Esta vulnerabilidad afecta a Firefox &lt; 140 y Firefox ESR &lt; 128.12.

24 Jun 2025, 13:15

Type Values Removed Values Added
New CVE
Information

Published : 2025-06-24 13:15

Updated : 2025-07-03 16:43

NVD link : CVE-2025-6430

Mitre link : CVE-2025-6430

CVE.ORG link : CVE-2025-6430

JSON object : View

Products Affected

mozilla

  • firefox
CWE
CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')