CVE-2019-9801 Details
Description
Firefox will accept any registered Program ID as an external protocol handler and offer to launch this local application when given a matching URL on Windows operating systems. This should only happen if the program has specifically registered itself as a "URL Handler" in the Windows registry. *Note: This issue only affects Windows operating systems. Other operating systems are unaffected.*. This vulnerability affects Thunderbird < 60.6, Firefox ESR < 60.6, and Firefox < 66.
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.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=1527717 | CVE | Issue TrackingPermissions RequiredVendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2019-07/ | CVE | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2019-08/ | CVE | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2019-11/ | CVE | Vendor Advisory |
| https://bugzilla.mozilla.org/show_bug.cgi?id=1527717 | [email protected] | Issue TrackingPermissions RequiredVendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2019-07/ | [email protected] | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2019-08/ | [email protected] | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2019-11/ | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-20 | Improper Input Validation | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| mozilla firefox | < 66.0 |
CPE
Remediation
| |
| mozilla firefox esr | < 60.6 |
CPE
Remediation
| |
| mozilla thunderbird | < 60.6 |
CPE
Remediation
| |
| microsoft windows | All versions |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Nov 21, 2024 | CVE Modified | CVE |
| May 14, 2024 | CVE Modified | [email protected] |
| Apr 29, 2019 | Initial Analysis | [email protected] |