CVE-2026-6763

MediumCVSS 6.5/10Last modified Oct 26, 2026

Description

Mitigation bypass in the File Handling component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.

Metrics

CVSS 3.1 6.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Weakness enumeration

CWE-693

Affected software

VendorProductVersions
MozillaFirefox—
MozillaThunderbird—

References

Timeline

Published
Apr 21, 2026
Last modified
Oct 26, 2026
NVD status
Analyzed

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CVE-2026-6763: Medium severity, CVSS 6.5 | Vulnix