CVE-2026-6771 - Vulnerability Analysis

Overview

Mozilla Firefox before 150 and Firefox ESR before 140.10 contain a mitigation bypass in the DOM security component, letting attackers bypass security mitigations, exploit requires crafted web content.

Severity & Score

Impact

Attackers can bypass security mitigations in the DOM, potentially leading to further exploitation.

Mitigation

Update to Firefox 150 or Firefox ESR 140.10 or later.

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=2025067
• https://www.mozilla.org/security/advisories/mfsa2026-30/
• https://www.mozilla.org/security/advisories/mfsa2026-32/
• https://www.mozilla.org/security/advisories/mfsa2026-33/
• https://www.mozilla.org/security/advisories/mfsa2026-34/

Related Resources

• Vulnerability Intelligence Dashboard
• Credential Scanner