🛡️ CVE-2024-9393
🟠 CVSS 7.5 — High ✅ No Known Exploit CWE-346 NVD
7.5
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

Details

Severity HIGH
CVSS Score 7.5
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE CWE-346
Public Exploit ✅ No
Source NVD
Published 2024-10-01
Updated 2026-06-02
Modified 2025-11-03
Fix URL N/A

Affected Packages

Software From version Fixed in
firefox 131.0
firefox-esr 116.0 128.3.0
thunderbird

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