vulnerability
Red Hat: CVE-2024-9393: firefox: thunderbird: Cross-origin access to PDF contents through multipart responses (Multiple Advisories)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 8 | (AV:N/AC:M/Au:N/C:P/I:C/A:P) | Oct 1, 2024 | Oct 7, 2024 | Mar 27, 2026 |
Severity
8
CVSS
(AV:N/AC:M/Au:N/C:P/I:C/A:P)
Published
Oct 1, 2024
Added
Oct 7, 2024
Modified
Mar 27, 2026
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.
Solutions
redhat-upgrade-firefoxredhat-upgrade-firefox-debuginforedhat-upgrade-firefox-debugsourceredhat-upgrade-firefox-x11redhat-upgrade-thunderbirdredhat-upgrade-thunderbird-debuginforedhat-upgrade-thunderbird-debugsource
References
Rapid7 Labs
2026 Global Threat Landscape Report
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