Firefox < 41.0.2 'fetch' API Cross-Origin Bypass

Medium Nessus Plugin ID 86418


The remote Windows host contains a web browser that is affected by a cross-origin restriction bypass vulnerability.


The version of Firefox installed on the remote Windows host is prior to 41.0.2. It is, therefore, affected by a cross-origin restriction bypass vulnerability in the fetch() API due to an incorrect implementation of the Cross-Origin Resource Sharing (CORS) specification. A remote attacker can exploit this, via a malicious website, to access private data from other origins.


Upgrade to Firefox 41.0.2 or later.

See Also

Plugin Details

Severity: Medium

ID: 86418

File Name: mozilla_firefox_41_0_2.nasl

Version: $Revision: 1.5 $

Type: local

Agent: windows

Family: Windows

Published: 2015/10/16

Modified: 2016/04/28

Dependencies: 20862

Risk Information

Risk Factor: Medium


Base Score: 5.8

Temporal Score: 4.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:N

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

Vulnerability Information

CPE: cpe:/a:mozilla:firefox

Required KB Items: Mozilla/Firefox/Version

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2015/10/15

Vulnerability Publication Date: 2015/10/15

Reference Information

CVE: CVE-2015-7184

OSVDB: 128954