CVE-2025-2830

Published: Apr 15, 2025Modified: Apr 13, 2026

6.3

Vector

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

Exploitability: 2.8 / Impact: 3.4

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

Description

By crafting a malformed file name for an attachment in a multipart message, an attacker can trick Thunderbird into including a directory listing of /tmp when the message is forwarded or edited as a new message. This vulnerability could allow attackers to disclose sensitive information from the victim's system. This vulnerability is not limited to Linux; similar behavior has been observed on Windows as well. This vulnerability was fixed in Thunderbird 137.0.2 and Thunderbird 128.9.2.

Affected (2)

Products: Mozilla: Thunderbird

1 product

Configuration A

2 vulnerable

Vulnerable Software	Affected Versions
Mozilla Thunderbird	Before 128.9.2
Mozilla Thunderbird	From 129.0 to 137.0.2

Related CWEs

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

References (3)

https://bugzilla.mozilla.org/show_bug.cgi?id=1956379

Source: security@mozilla.org

Permissions Required

https://www.mozilla.org/security/advisories/mfsa2025-26/

Source: security@mozilla.org

Vendor Advisory

https://www.mozilla.org/security/advisories/mfsa2025-27/

Source: security@mozilla.org

Vendor Advisory

Timeline

No history available yet.