Paper/Archive/CVE-2026-6768

CVE-2026-6768

Mozilla Firefox — Mitigation bypass in the Networking: Cookies component

EPSS 0.3%CVSS 9.8

critical.is priorityof 100

34

CVSS 9.8 (ADP)9.8 / 10 × 3029.4 Not in CISA KEV+300.0 EPSS percentile 21.0.210 × 204.2 No public exploit+100.0 SSVC exploitation: none+100.0

Description · from the CVE record

Mitigation bypass in the Networking: Cookies component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.

Affected

ProductAffectedFixed inSource

Firefoxsee advisory150CNA

Thunderbirdsee advisory150CNA

Scores by source

CISA ADP9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refbugzilla.mozilla.org/show_bug.cgi?id=2023615 refmozilla.org/security/advisories/mfsa2026-30 refmozilla.org/security/advisories/mfsa2026-33