VDB
CVE-2026-6763
CVE-2026-6763
PUBLISHED
CVSS 6.5 MEDIUM
Mitigation bypass in the File Handling component. This vulnerability was fixed in Firefox 150 and Firefox ESR 140.10.
EPSS 0.06% · 19.2th percentile
Risk Scores
CVSS 3.1
6.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
EPSS Score
0.06%
19.2th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Thunderbird | 150, 140.10 |
| Mozilla | Firefox | 150, 140.10 |
Timeline
- Apr 21, 2026 CVE Published
- Apr 22, 2026 EPSS Score
- Apr 22, 2026 Security Advisory
- Apr 27, 2026 Distribution Patch
- Apr 27, 2026 Security Advisory
- Apr 27, 2026 Distribution Patch
- Apr 27, 2026 Security Advisory
- Apr 27, 2026 Distribution Patch
- Apr 27, 2026 Security Advisory
- Apr 28, 2026 Distribution Patch
- Apr 28, 2026 Distribution Patch
- Apr 30, 2026 Distribution Patch
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=2021666 url
- https://www.mozilla.org/security/advisories/mfsa2026-30/ url
- https://www.mozilla.org/security/advisories/mfsa2026-32/ url
- https://www.mozilla.org/security/advisories/mfsa2026-33/ url
- https://www.mozilla.org/security/advisories/mfsa2026-34/ url
- https://nvd.nist.gov/vuln/detail/CVE-2026-6763 advisory
- https://www.mozilla.org/security/advisories/mfsa2026-30 url
- https://www.mozilla.org/security/advisories/mfsa2026-32 url