CVE-2026-74956

9.1 Critique

Publiée le 18/08/2026 à 15:17 · Modifiée le 19/08/2026 à 03:00 · Analysée par le NVD · Source : security@mozilla.org

Description

Same-origin policy bypass in the DOM: Service Workers component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.

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Produits concernés

Mozilla Firefox
Mozilla Thunderbird

Scores CVSS

Version	Score	Source	Vecteur
3.1	9.1 Critique	134c704f-9b21-4f2e-91b3-4a467353bcc0	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N`

Faiblesses (CWE)

CWE-843

Références

https://bugzilla.mozilla.org/show_bug.cgi?id=2032406 Permissions Required
https://www.mozilla.org/security/advisories/mfsa2026-74/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-77/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-78/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-80/ Vendor Advisory

Ailleurs

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