CVE-2025-3839

Name	CVE-2025-3839
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.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
epiphany-browser (PTS)	bullseye (security), bullseye	3.38.2-1+deb11u3	vulnerable
	bookworm	43.1-1	vulnerable
	trixie	48.5-0+deb13u1	fixed
	forky, sid	49.2-3	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
epiphany-browser	source	(unstable)	48.1-1

Notes

[bookworm] - epiphany-browser <no-dsa> (Minor issue)
[bullseye] - epiphany-browser <postponed> (Minor issue)
https://gitlab.gnome.org/GNOME/epiphany/-/issues/2641
Fixed by: https://gitlab.gnome.org/GNOME/epiphany/-/commit/324e25caee659bce43ff5c614d105f64899dfb7f (48.1)
Fixed by: https://gitlab.gnome.org/GNOME/epiphany/-/commit/9f80e7e80b75212627790d74041d46eedb6e321e (47.5)