CVE-2026-12316
published 2026-06-16CVE-2026-12316: Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 152 and Thunderbird 152.
PriorityP351critical9.1CVSS 3.1
AVNACLPRNUINSUCHIHAN
EPSS
0.24%
15.9th percentile
Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 152 and Thunderbird 152.
Affected
2 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| mozilla | firefox | < Firefox 152 | Firefox 152 |
| mozilla | thunderbird | < Thunderbird 152 | Thunderbird 152 |
CVSS provenance
nvdv3.19.1CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
vendor_redhat9.1CRITICAL
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VulDB
Mozilla Firefox up to 151 DOM Security Remote Code Execution (Nessus ID 321415 / WID-SEC-2026-1959)
vuldb·2026-07-09·CVSS 9.1
CVE-2026-12316 [CRITICAL] Mozilla Firefox up to 151 DOM Security Remote Code Execution (Nessus ID 321415 / WID-SEC-2026-1959)
A vulnerability labeled as critical has been found in Mozilla Firefox up to 151. This affects an unknown part of the component DOM Security. Such manipulation leads to Remote Code Execution.
This vulnerability is listed as CVE-2026-12316. The attack may be performed from remote. There is no available exploit.
The affected component should be upgraded.
GHSA
Mitigation bypass in the DOM: Security component.
ghsa_unreviewed·2026-06-16
CVE-2026-12316 [CRITICAL] CWE-693 Mitigation bypass in the DOM: Security component.
Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 152.
Red Hat
firefox: thunderbird: Mitigation bypass in the DOM: Security component
vendor_redhat·2026-06-16·CVSS 9.1
CVE-2026-12316 [CRITICAL] CWE-358 firefox: thunderbird: Mitigation bypass in the DOM: Security component
firefox: thunderbird: Mitigation bypass in the DOM: Security component
Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 152 and Thunderbird 152.
A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue:
Mitigation bypass in the DOM: Security 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: rhel10/thunderbird-flatpak (Red Hat Enterprise Linux 10) - Not affected
Package: thunderbird (Red Hat Enterprise Linux 10) - Not affected
Package: firefox (Red Hat
Mozilla
Mozilla Foundation Security Advisory 2026-57: CVE-2026-12316
vendor_mozilla·CVSS 9.1
CVE-2026-12316 [CRITICAL] Mozilla Foundation Security Advisory 2026-57: CVE-2026-12316
Mozilla Foundation Security Advisory 2026-57
CVE: CVE-2026-12316
Product: Firefox
Impact: high
Fixed in: Firefox 152
Mozilla
Mozilla Foundation Security Advisory 2026-60: CVE-2026-12316
vendor_mozilla·CVSS 9.1
CVE-2026-12316 [CRITICAL] Mozilla Foundation Security Advisory 2026-60: CVE-2026-12316
Mozilla Foundation Security Advisory 2026-60
CVE: CVE-2026-12316
Product: Thunderbird
Impact: high
Fixed in: Thunderbird 152
No detection rules found.
No public exploits indexed.
2026-06-16
Published