CVE-2026-6760
published 2026-04-21CVE-2026-6760: Mitigation bypass in the Networking: Cookies component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.
PriorityP351critical9.8CVSS 3.1
AVNACLPRNUINSUCHIHAH
EPSS
0.28%
19.9th 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_redhat6.1MEDIUM
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
VulDB
Mozilla Firefox up to 149 Cookies Remote Code Execution (Nessus ID 310636)
vuldb·2026-04-28
CVE-2026-6760 [CRITICAL] Mozilla Firefox up to 149 Cookies Remote Code Execution (Nessus ID 310636)
A vulnerability described as critical has been identified in Mozilla Firefox up to 149. Impacted is an unknown function of the component Cookies. The manipulation results in Remote Code Execution.
This vulnerability is known as CVE-2026-6760. It is possible to launch the attack remotely. No exploit is available.
Upgrading the affected component is recommended.
GHSA
GHSA-h5hc-2g7f-gxgj: Mitigation bypass in the Networking: Cookies component
ghsa_unreviewed·2026-04-21
CVE-2026-6760 [CRITICAL] CWE-288 GHSA-h5hc-2g7f-gxgj: Mitigation bypass in the Networking: Cookies component
Mitigation bypass in the Networking: Cookies component. This vulnerability was fixed in Firefox 150.
Red Hat
firefox: Mitigation bypass in the Networking: Cookies component
vendor_redhat·2026-04-21·CVSS 6.1
CVE-2026-6760 [MEDIUM] CWE-807 firefox: Mitigation bypass in the Networking: Cookies component
firefox: Mitigation bypass in the Networking: Cookies component
Mitigation bypass in the Networking: Cookies component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.
A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue:
Mitigation bypass in the Networking: Cookies component
Statement: Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.
Package: firefox (Red Hat Enterprise Linux 10) - Not affected
Package: rhel10/firefox-flatpak (Red Hat Enterprise Linux 10) - Not affected
Package: firefox (Red Hat Enterprise Linux 6) - Not affected
Package: firefox (Red Hat Enterprise Linux 7) - Not affected
Package: firefox (Red Hat Enterprise Linux 8) - Not affected
Mozilla
Mozilla Foundation Security Advisory 2026-30: CVE-2026-6760
vendor_mozilla
CVE-2026-6760 Mozilla Foundation Security Advisory 2026-30: CVE-2026-6760
Mozilla Foundation Security Advisory 2026-30
CVE: CVE-2026-6760
Product: Firefox
Impact: high
Fixed in: Firefox 150
Mozilla
Mozilla Foundation Security Advisory 2026-33: CVE-2026-6760
vendor_mozilla
CVE-2026-6760 Mozilla Foundation Security Advisory 2026-33: CVE-2026-6760
Mozilla Foundation Security Advisory 2026-33
CVE: CVE-2026-6760
Product: Thunderbird
Impact: high
Fixed in: Thunderbird 150
No detection rules found.
No public exploits indexed.
2026-04-21
Published