CVEvulnerability
CVE-2025-3523
6.4 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2025-04-15
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
- 6.4 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:H/A:L
- Weaknesses
- CWE-451
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.
Affected configurations
• mozilla thunderbird (< 128.9.2)
• mozilla thunderbird (>= 129.0 < 137.0.2)
Related
Weakness · CWE (1)
- CWE-451 User Interface (UI) Misrepresentation of Critical Information weakness
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1958385 Permissions Required
- https://www.mozilla.org/security/advisories/mfsa2025-26/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2025-27/ Vendor Advisory