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.
Published: 2025-04-30
Score: 4.3 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Address bar spoofing
Action: Immediate Update
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

Advisories
Source ID Title
EUVD EUVD EUVD-2025-12733 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 affects Focus < 138.
History

Mon, 13 Apr 2026 15:00:00 +0000

Type Values Removed Values Added
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 affects Focus < 138. 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.
Title Firefox Focus elide URL allows address bar spoofing

Mon, 12 May 2025 20:00:00 +0000

Type Values Removed Values Added
First Time appeared Mozilla
Mozilla firefox Focus
Weaknesses CWE-601
CPEs cpe:2.3:a:mozilla:firefox_focus:*:*:*:*:*:iphone_os:*:*
Vendors & Products Mozilla
Mozilla firefox Focus

Mon, 12 May 2025 16:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-451
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 30 Apr 2025 16:45:00 +0000

Type Values Removed Values Added
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 affects Focus < 138.
References

Subscriptions

Mozilla Firefox Focus
cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published:

Updated: 2026-04-13T14:28:36.100Z

Reserved: 2025-04-21T16:01:02.407Z

Link: CVE-2025-3859

cve-icon Vulnrichment

Updated: 2025-04-30T17:15:05.584Z

cve-icon NVD

Status : Modified

Published: 2025-04-30T17:15:50.903

Modified: 2026-04-13T15:16:58.203

Link: CVE-2025-3859

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-04-20T17:15:12Z

Weaknesses