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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | epiphany | < 47.5, 48.0 – < 48.1 | 47.5 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | epiphany-browser | 48.1-1 | — |
| Debian 13 | epiphany-browser | 48.1-1 | — |
| Debian 12 | epiphany-browser | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 25.10 | epiphany-browser | No fix yet | — |
| Ubuntu 24.04 LTS | epiphany-browser | No fix yet | — |
| Ubuntu 22.04 LTS | epiphany-browser | No fix yet | — |
| Ubuntu 20.04 LTS | epiphany-browser | No fix yet | — |
| Ubuntu 18.04 LTS | epiphany-browser | No fix yet | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | epiphany-browser | No fix yet | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | epiphany | 48.1-1.1 | openSUSE-SU-2025:15011-1 |
Advisories 1
- openSUSE-SU-2025:15011-1 epiphany-48.1-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
References
- https://access.redhat.com/security/cve/CVE-2025-3839 vdb-entry
- RHBZ#2361430 issue-tracking