Description
An attacker could, via a specially crafted multipart response, execute arbitrary JavaScript under the `resource://pdf.js` origin. This could allow them to access cross-origin PDF content. This access is limited to "same site" documents by the Site Isolation feature on desktop clients, but full cross-origin access is possible on Android versions. This vulnerability affects Firefox < 131, Firefox ESR < 128.3, Firefox ESR < 115.16, Thunderbird < 128.3, and Thunderbird < 131.
References (8)
Scores
CVSS v3
7.5
EPSS
0.0017
EPSS Percentile
37.6%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-346
Status
published
Products (4)
mozilla/firefox
< 131.0
mozilla/firefox_esr
< 115.16.0
mozilla/thunderbird
129.0 beta (6 CPE variants)
mozilla/thunderbird
< 128.3
Published
Oct 01, 2024
Tracked Since
Feb 18, 2026