Description
Firefox for iOS would not respect a Content-Disposition header of type Attachment and would incorrectly display the content inline rather than downloading, potentially allowing for XSS attacks. This vulnerability was fixed in Firefox for iOS 142.
Scores
CVSS v3
6.1
EPSS
0.0003
EPSS Percentile
9.1%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-640
Status
published
Products (2)
mozilla/firefox
< 142.0
Mozilla/Firefox for iOS
142
Published
Aug 19, 2025
Tracked Since
Feb 18, 2026