CVE-2021-43544
Last modified
CVE-2021-43544 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. When receiving a URL through a SEND intent, Firefox would have searched for the text, but subsequent usages of the address bar might have caused the URL to load unintentionally, which could lead to XSS and spoofing attacks. *This bug only affects Firefox for Android. EPSS estimates a 0.51% chance of exploitation in the next 30 days.
Description
When receiving a URL through a SEND intent, Firefox would have searched for the text, but subsequent usages of the address bar might have caused the URL to load unintentionally, which could lead to XSS and spoofing attacks. *This bug only affects Firefox for Android. Other operating systems are unaffected.*. This vulnerability affects Firefox < 95.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | < 95.0 |
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1739934Issue Tracking, Permissions Required
- https://www.mozilla.org/security/advisories/mfsa2021-52/Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1739934Issue Tracking, Permissions Required
- https://www.mozilla.org/security/advisories/mfsa2021-52/Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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