Bug#1143966: epiphany-browser: CVE-2026-18487

[Salvatore Bonaccorso]

Source: epiphany-browser
Version: 50.4-2
Severity: important
Tags: security upstream
Forwarded: https://gitlab.gnome.org/GNOME/epiphany/-/work_items/2897
X-Debbugs-Cc: carnil at debian.org, Debian Security Team <team at security.debian.org>

Hi,

The following vulnerability was published for epiphany-browser.

CVE-2026-18487[0]:
| A flaw was found in Epiphany. An issue in how the browser reads web
| addresses allows attackers to fake the domain name shown in the
| address bar. If a user clicks a specially crafted link containing a
| colon (for example, [https://trusted.com:80@attacker.com/](https://t
| rusted.com:80 at attacker.com/)), the address bar and security menus
| will display the safe website (trusted.com) but it will actually
| load the attacker website (attacker.com) on the screen. This allows
| attackers to create convincing phishing pages to trick users into
| trusting a malicious site.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2026-18487
    https://www.cve.org/CVERecord?id=CVE-2026-18487
[1] https://gitlab.gnome.org/GNOME/epiphany/-/work_items/2897
[2] https://gitlab.gnome.org/GNOME/epiphany/-/commit/13dd600719d7aac532ed6c84ea0d12dd372d4ac4

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore