CVE-2026-6768
published 2026-04-21CVE-2026-6768: Mitigation bypass in the Networking: Cookies component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.
PriorityP351critical9.8CVSS 3.1
AVNACLPRNUINSUCHIHAH
EPSS
0.29%
20.4th percentile
Mitigation bypass in the Networking: Cookies component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.
Affected
4 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| mozilla | firefox | < Firefox 150 | Firefox 150 |
| mozilla | firefox | < 150.0 | 150.0 |
| mozilla | thunderbird | < Thunderbird 150 | Thunderbird 150 |
| mozilla | thunderbird | < 150.0 | 150.0 |
CVSS provenance
nvdv3.19.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
vendor_redhat9.8CRITICAL
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Red Hat
Firefox: Networking: Cookies: Firefox: Mitigation bypass in Networking: Cookies component
vendor_redhat·2026-04-21·CVSS 9.8
CVE-2026-6768 [CRITICAL] CWE-807 Firefox: Networking: Cookies: Firefox: Mitigation bypass in Networking: Cookies component
Firefox: Networking: Cookies: Firefox: Mitigation bypass in Networking: Cookies component
A flaw was found in the Networking: Cookies component of Firefox. This vulnerability allows for a mitigation bypass, which could potentially allow attackers to circumvent security measures. This weakens the intended security controls, making the system more susceptible to other forms of attack.
Mozilla
Mozilla Foundation Security Advisory 2026-30: CVE-2026-6768
vendor_mozilla·CVSS 9.8
CVE-2026-6768 [CRITICAL] Mozilla Foundation Security Advisory 2026-30: CVE-2026-6768
Mozilla Foundation Security Advisory 2026-30
CVE: CVE-2026-6768
Product: Firefox
Impact: high
Fixed in: Firefox 150
Mozilla
Mozilla Foundation Security Advisory 2026-33: CVE-2026-6768
vendor_mozilla·CVSS 9.8
CVE-2026-6768 [CRITICAL] Mozilla Foundation Security Advisory 2026-33: CVE-2026-6768
Mozilla Foundation Security Advisory 2026-33
CVE: CVE-2026-6768
Product: Thunderbird
Impact: high
Fixed in: Thunderbird 150
GHSA
GHSA-q5x7-w9rr-q429: Mitigation bypass in the Networking: Cookies component
ghsa_unreviewed·2026-04-21
CVE-2026-6768 [CRITICAL] CWE-288 GHSA-q5x7-w9rr-q429: Mitigation bypass in the Networking: Cookies component
Mitigation bypass in the Networking: Cookies component. This vulnerability was fixed in Firefox 150.
No detection rules found.
No public exploits indexed.
2026-04-21
Published