CVE-2026-84642

7.5 Élevée

Publiée le 02/09/2026 à 00:17 · Modifiée le 03/09/2026 à 21:00 · Analysée par le NVD · Source : security@mozilla.org

Description

The values of the mail.allowed_attachment_hostnames advanced config setting were used in a regular expression without escaping. For some possible valid hostnames, this could allow certain unintended hostnames to also match and serve remote attachments. This vulnerability was fixed in Thunderbird 155 and Thunderbird 153.2.

Traduire en français

Produits concernés

Mozilla Thunderbird

Scores CVSS

Version	Score	Source	Vecteur
3.1	7.5 Élevée	134c704f-9b21-4f2e-91b3-4a467353bcc0	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N`

Faiblesses (CWE)

CWE-1333

Références

https://bugzilla.mozilla.org/show_bug.cgi?id=2060462 Permissions Required
https://www.mozilla.org/security/advisories/mfsa2026-86/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-88/ Vendor Advisory

Ailleurs

NVD
CVE.org
CIRCL Vulnerability-Lookup
CERT-FR
GitHub Advisories