CVE-2026-74966: Information disclosure in the Form Autofill component
Published Aug 18, 2026
·Updated
Information disclosure in the Form Autofill component. This vulnerability was fixed in Firefox 154 and Firefox ESR 153.1.
Affected Software
3 affected componentsFixes available
Firefox<=154, >=0<=153.1
Mozilla Firefox<154
154
Mozilla Firefox ESR<153.1
153.1
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 154 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 153.1 - Upgrade
Upgrade
Mozilla Firefox (Form Autofill)to a version that resolves this vulnerability.Fixed in 154 - Upgrade
Upgrade
Mozilla Firefox ESR (Form Autofill)to a version that resolves this vulnerability.Fixed in 153.1
Event History
Aug 18, 2026
CVE Published
via Mozilla·12:00 AM
Data Sourced
via Mozilla·12:00 AM
DescriptionSeverityAffected Software
Updated
via Mozilla·12:00 AM
Affected Software
CVE Published
via MITRE·12:23 PM
Data Sourced
via MITRE·12:23 PM
Description
Peer vulnerabilities
Found alongside the following vulnerabilities.
- CVE-2026-75874
- CVE-2026-74934
- CVE-2026-74935
- CVE-2026-74936
- CVE-2026-74937
- CVE-2026-74938
- CVE-2026-74939
- CVE-2026-74940
- CVE-2026-74941
- CVE-2026-74942
- CVE-2026-74943
- CVE-2026-74944
- CVE-2026-74945
- CVE-2026-74946
- CVE-2026-74947
- CVE-2026-74948
- CVE-2026-74949
- CVE-2026-74950
- CVE-2026-74951
- CVE-2026-74952
- CVE-2026-74953
- CVE-2026-74954
- CVE-2026-74955
- CVE-2026-74956
- CVE-2026-74957
- CVE-2026-74958
- CVE-2026-74959
- CVE-2026-74960
- CVE-2026-74961
- CVE-2026-74962
- CVE-2026-74963
- CVE-2026-74964
- CVE-2026-74965
- CVE-2026-74966
- CVE-2026-74967
- CVE-2026-74968
- CVE-2026-74969
- CVE-2026-74970
- CVE-2026-74971
- CVE-2026-74972
- CVE-2026-74973
- CVE-2026-74974
- CVE-2026-74975
- CVE-2026-74976
- CVE-2026-74977
- CVE-2026-74978
- CVE-2026-74979
- CVE-2026-74980
- CVE-2026-74981
- CVE-2026-74982
- CVE-2026-74983
- CVE-2026-74984
- CVE-2026-74985
- CVE-2026-74986
- CVE-2026-74987
- CVE-2026-74988
- CVE-2026-74989
- CVE-2026-74990
Frequently Asked Questions
1
Which Firefox releases include the fix?
Firefox 154 and Firefox ESR 153.1 contain the fix. Install the applicable fixed release to remediate the issue.