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 | Apr 15, 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
Apr 15, 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 was fixed in Thunderbird 137.0.2 and Thunderbird 128.9.2.
Solutions
redhat-upgrade-thunderbirdredhat-upgrade-thunderbird-debuginforedhat-upgrade-thunderbird-debugsource
Rapid7 Labs
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