CVE-2025-3839

Published: Jan 23, 2026Modified: Jun 17, 2026Deferred

8.0

Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N

Exploitability: 1.6 / Impact: 5.8

Source: patrick@puiterwijk.org (Secondary)

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.

Related CWEs

CWE-356

Product UI does not Warn User of Unsafe Actions

The product's user interface does not warn the user before undertaking an unsafe action on behalf of that user. This makes it easier for attackers to trick users into inflicting damage to their system.

References (2)

https://access.redhat.com/security/cve/CVE-2025-3839

Source: patrick@puiterwijk.org

https://bugzilla.redhat.com/show_bug.cgi?id=2361430

Source: patrick@puiterwijk.org

Timeline

No history available yet.