CVE-2025-3839

epiphany-browser: A flaw was found in Epiphany, a tool that allows websites to open external URL handler applications with minimal user...

CVE-2025-3839 is fixed in epiphany-browser on 1 platform, first by DEBIAN-CVE-2025-3839, released January 23, 2026. It is not reported as exploited. Patch Radar priority: High.

High
CVSS
8.0
high
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0039
33rd percentile

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.

Where it's fixed

ProductFixed inFixReleased
Linux
epiphany-browser · Debian 13.5 (trixie) 48.1-1 DEBIAN-CVE-2025-3839 Jan 23, 2026
epiphany-browser · Debian 14 48.1-1 DEBIAN-CVE-2025-3839 Jan 23, 2026

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