CVE-2024-9394

firefox: thunderbird: Cross-origin access to JSON contents through multipart responses

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Severity

Important

Red Hat Product Security

7.6

CVSS 3.1

Review impact separately from score.

Published · October 2, 2024

Updated · April 23, 2026

Description

A flaw was found in Mozilla. The Mozilla Foundation's Security Advisory describes the issue as follows: An attacker could, via a specially crafted multipart response, execute arbitrary JavaScript under the resource://devtools origin. This could allow them to access cross-origin JSON 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.

Statement

Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 7.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:L

CWE-94 · Improper Control of Generation of Code ('Code Injection')