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://trusted.com:80@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.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
Required
User action required
Impact Assessment
Confidentiality
Low
Partial data leak
Integrity
Low
Partial data modification
Availability
None
No disruption
CVSS Vector v3.1
Weakness Type (CWE)
References 4
https://access.redhat.com/security/cve/CVE-2026-18487
patrick@puiterwijk.org
https://bugzilla.redhat.com/show_bug.cgi?id=2509570
patrick@puiterwijk.org
https://gitlab.gnome.org/GNOME/epiphany/-/commit/0dde1d369458ac5c44b74b5ad3c433…
patrick@puiterwijk.org
https://gitlab.gnome.org/GNOME/epiphany/-/work_items/2897
patrick@puiterwijk.org