CVE-2026-8969: Mitigation bypass in the DOM: Security component
Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 151 and Thunderbird 151.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 151 - Upgrade
Upgrade
Mozilla Firefoxto a version that resolves this vulnerability.Fixed in 151 - Upgrade
Upgrade
Mozilla Thunderbirdto a version that resolves this vulnerability.Fixed in 151
Event History
Peer vulnerabilities
Found alongside the following vulnerabilities.
- CVE-2026-8945
- CVE-2026-8946
- CVE-2026-8947
- CVE-2026-8948
- CVE-2026-8949
- CVE-2026-8950
- CVE-2026-8951
- CVE-2026-8952
- CVE-2026-8953
- CVE-2026-8954
- CVE-2026-8955
- CVE-2026-8956
- CVE-2026-8957
- CVE-2026-8958
- CVE-2026-8959
- CVE-2026-8960
- CVE-2026-8961
- CVE-2026-8962
- CVE-2026-8963
- CVE-2026-8964
- CVE-2026-8965
- CVE-2026-8966
- CVE-2026-8967
- CVE-2026-8968
- CVE-2026-8969
- CVE-2026-8970
- CVE-2026-8971
- CVE-2026-8972
- CVE-2026-8973
- CVE-2026-8974
- CVE-2026-8975
Frequently Asked Questions
What is the severity of CVE-2026-8969?
CVE-2026-8969 has a severity rating of 8.1 which is classified as high.
How do I fix CVE-2026-8969?
To fix CVE-2026-8969, update Mozilla Firefox or Mozilla Thunderbird to version 151 or later.
What does CVE-2026-8969 affect?
CVE-2026-8969 affects the security components of Mozilla Firefox and Mozilla Thunderbird.
What are the potential impacts of CVE-2026-8969?
CVE-2026-8969 can lead to bypassing security mitigations which may allow unauthorized access to sensitive information.
When was CVE-2026-8969 published?
CVE-2026-8969 was published on May 19, 2026.