CVE-2026-18487 MEDIUM

CVE-2026-18487: Epiphany: address bar / host spoofing via userinfo in ephy_uri_get_decoded_host()

Vendor Gnome
Product Epiphany
Weakness CWE-451
Published August 6, 2026
Last update August 6, 2026

CVSS base score

5.4/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality Low
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

August 6, 2026 CVE published