vulnerability
Red Hat: CVE-2025-3523: thunderbird: User Interface (UI) Misrepresentation of attachment URL (Multiple Advisories)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:N/AC:H/Au:N/C:P/I:C/A:P) | Apr 15, 2025 | Apr 29, 2025 | Jan 28, 2026 |
Severity
7
CVSS
(AV:N/AC:H/Au:N/C:P/I:C/A:P)
Published
Apr 15, 2025
Added
Apr 29, 2025
Modified
Jan 28, 2026
Description
When an email contains multiple attachments with external links via the X-Mozilla-External-Attachment-URL header, only the last link is shown when hovering over any attachment. Although the correct link is used on click, the misleading hover text could trick users into downloading content from untrusted sources. This vulnerability affects Thunderbird < 137.0.2 and Thunderbird < 128.9.2.
Solutions
no-fix-redhat-rpm-packageredhat-upgrade-thunderbirdredhat-upgrade-thunderbird-debuginforedhat-upgrade-thunderbird-debugsource
NEW
Explore Exposure Command
Confidently identify and prioritize exposures from endpoint to cloud with full attack surface visibility and threat-aware risk context.