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CVE-2026-74966 Details
Description
Information disclosure in the Form Autofill component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Aug 20, 2026Exploitation: NoneAutomatable: YesTechnical Impact: Partial
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=2054776 | [email protected] | Permissions Required |
| https://www.mozilla.org/security/advisories/mfsa2026-74/ | [email protected] | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2026-77/ | [email protected] | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2026-78/ | [email protected] | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2026-80/ | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-359 | Exposure of Private Personal Information to an Unauthorized Actor | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| mozilla firefox | < 153.1.0 |
CPE
Remediation
| |
| mozilla thunderbird | < 153.1.0 |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Aug 25, 2026 | Initial Analysis | [email protected] |
| Aug 20, 2026 | CVE Modified | CISA-ADP |
| Aug 18, 2026 | CVE Modified | [email protected] |
| Aug 18, 2026 | New CVE Received | [email protected] |