CVE-2025-3839

Epiphany: insecure external protocol invocation in epiphany

Published Jan 23, 2026 CVSS 3.1 · 8 High EPSS < 1% KEV · Not listed
Description
A flaw was found in Epiphany, a tool that allows websites to open external URL handler applications with minimal user interaction. This design can be misused to exploit vulnerabilities within those handlers, making them appear remotely exploitable. The browser fails to properly warn or gate this action, resulting in potential code execution on the client device via trusted UI behavior.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

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

Type Values Removed Values Added
First Time appeared Gnome
Gnome epiphany
Vendors & Products Gnome
Gnome epiphany
Type Values Removed Values Added
Description A flaw was found in Epiphany, a tool that allows websites to open external URL handler applications with minimal user interaction. This design can be misused to exploit vulnerabilities within those handlers, making them appear remotely exploitable. The browser fails to properly warn or gate this action, resulting in potential code execution on the client device via trusted UI behavior.
Title Epiphany: insecure external protocol invocation in epiphany
Weaknesses CWE-356
References
Metrics cvssV3_1

{'score': 8, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
fedora
Published
Updated
Jan 23, 2026, 6:54 PM
Reserved
Apr 21, 2025, 9:25 AM
Status
Deferred
Published
Jan 23, 2026, 5:16 AM
Modified
Jun 17, 2026, 9:20 AM