CVE-2025-3859 - CVE House
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Status published Unknown CVE-2025-3859

Firefox Focus elide URL allows address bar spoofing

Vulnerability Description

Websites directing users to long URLs that caused eliding to occur in the location view could leverage the truncating behavior to potentially trick users into thinking they were on a different webpage. This vulnerability was fixed in Focus 138.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • James Lee

References

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CVE-2025-9183
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Affected Vendor

Affected Software

Focus
Vulnerable Versions:
138

Timeline

Official Publish: April 30th, 2025
Last Modified: April 13th, 2026
Added to House: July 22nd, 2026

CVSS Vectors

No vector data available

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.