CVE-2026-84128

Description

Privilege escalation in the WebDriver BiDi component. This vulnerability was fixed in Firefox 155 and Thunderbird 155.

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Produits concernés

• Mozilla Firefox
• Mozilla Thunderbird

Scores CVSS

Faiblesses (CWE)

• CWE-284

Références

• https://bugzilla.mozilla.org/show_bug.cgi?id=2044280 Permissions Required
• https://www.mozilla.org/security/advisories/mfsa2026-82/ Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2026-86/ Vendor Advisory

Ailleurs

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