CVE-2026-84137

4.3 Moyenne

Publiée le 01/09/2026 à 15:20 · Modifiée le 03/09/2026 à 20:17 · Modifiée · Source : security@mozilla.org

Description

Spoofing issue in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 155, Firefox ESR 153.2, Thunderbird 155, and Thunderbird 153.2.

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Produits concernés

Mozilla Firefox
Mozilla Thunderbird

Scores CVSS

Version	Score	Source	Vecteur
3.1	4.3 Moyenne	nvd@nist.gov (NVD)	`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N`
3.1	9.8 Critique	134c704f-9b21-4f2e-91b3-4a467353bcc0	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`

Faiblesses (CWE)

CWE-346
CWE-451

Références

https://bugzilla.mozilla.org/show_bug.cgi?id=2051146 Issue TrackingPermissions Required
https://www.mozilla.org/security/advisories/mfsa2026-82/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-85/ Vendor Advisory
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