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ALSA-2025:4229 — Important: thunderbird security update

Affected: AlmaLinux:9: thunderbird

Mozilla Thunderbird is a standalone mail and newsgroup client.

Security Fix(es):

* thunderbird: User Interface (UI) Misrepresentation of attachment URL (CVE-2025-3523) * thunderbird: Information Disclosure of /tmp directory listing (CVE-2025-2830) * thunderbird: Leak of hashed Window credentials via crafted attachment URL (CVE-2025-3522)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

bdu:2025-06555

certfr-2025-avi-0317 — De multiples vulnérabilités ont été découvertes dans les produits Mozilla. Elles permettent à un attaquant de provoquer…

certfr-2025-avi-0317

EUVD-2026-290728

fkie_cve-2025-3522

Thunderbird processes the X-Mozilla-External-Attachment-URL header to handle attachments which can be hosted externally. When an email is opened, Thunderbird accesses the specified URL to determine file size, and navigates to it when the user clicks the attachment. Because the URL is not validated or sanitized, it can reference internal resources like chrome:// or SMB share file:// links, potentially leading to hashed Windows credential leakage and opening the door to more serious security issues. This vulnerability was fixed in Thunderbird 137.0.2 and Thunderbird 128.9.2.

GHSA-78fw-w53r-pgwg

Thunderbird processes the X-Mozilla-External-Attachment-URL header to handle attachments which can be hosted externally. When an email is opened, Thunderbird accesses the specified URL to determine file size, and navigates to it when the user clicks the attachment. Because the URL is not validated or sanitized, it can reference internal resources like chrome:// or SMB share file:// links, potentially leading to hashed Windows credential leakage and opening the door to more serious security issues. This vulnerability affects Thunderbird < 137.0.2 and Thunderbird < 128.9.2.

OESA-2025-1835 — thunderbird security update

Affected: openEuler:24.03-LTS-SP2: thunderbird

Mozilla Thunderbird is a standalone mail and newsgroup client. Security Fix(es):

A permission leak could have occurred from a trusted site to an untrusted site via `embed` or `object` elements. This vulnerability affects Firefox < 132, Firefox ESR < 128.4, Firefox ESR < 115.17, Thunderbird < 128.4, and Thunderbird < 132.(CVE-2024-10458)

An attacker could have caused a use-after-free when accessibility was enabled, leading to a potentially exploitable crash. This vulnerability affects Firefox < 132, Firefox ESR < 128.4, Firefox ESR < 115.17, Thunderbird < 128.4, and Thunderbird < 132.(CVE-2024-10459)

The origin of an external protocol handler prompt could have been obscured using a data: URL within an `iframe`. This vulnerability affects Firefox < 132, Firefox ESR < 128.4, Thunderbird < 128.4, and Thunderbird < 132.(CVE-2024-10460)

In multipart/x-mixed-replace responses, `Content-Disposition: attachment` in the response header was not respected and did not force a download, which could allow XSS attacks. This vulnerability affects Firefox < 132, Firefox ESR < 128.4, Thunderbird < 128.4, and Thunderbird < 132.(CVE-2024-10461)

Truncation of a long URL could have allowed origin spoofing in a permission prompt. This vulnerability affects Firefox < 132, Firefox ESR < 128.4, Thunderbird < 128.4, and Thunderbird < 132.(CVE-2024-10462)

Video frames could have been leaked between origins in some situations. Thi…

openSUSE-SU-2025:15000-1 — MozillaThunderbird-128.9.2-1.1 on GA media

MozillaThunderbird-128.9.2-1.1 on GA media

RHSA-2025:4389 — Red Hat Security Advisory: thunderbird security update

thunderbird: Information Disclosure of /tmp directory listing thunderbird: Leak of hashed Window credentials via crafted attachment URL thunderbird: User Interface (UI) Misrepresentation of attachment URL

SUSE-SU-2025:1366-1 — Security update for MozillaThunderbird

Security update for MozillaThunderbird

UBUNTU-CVE-2025-3522

Affected: Ubuntu:22.04:LTS: thunderbird

WID-SEC-W-2025-0803 — Mozilla Thunderbird und Thunderbird ESR: Mehrere Schwachstellen

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Mozilla Thunderbird ausnutzen, um Informationen preiszugeben und Spoofing-Angriffe durchzuführen.