CVE-2026-18487 Epiphany: address bar / host spoofing via userinfo in ephy_uri_get_decoded_host()
Attackers can spoof the displayed domain in the address bar via crafted URLs, facilitating phishing attacks against Epiphany browser users.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-18487?
CVE-2026-18487 is a medium-severity vulnerability in GNOME Epiphany, published on 6 Aug 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
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:[email protected]/](https://trusted.com:[email protected]/)), 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.
Weakness: CWE-451
Which versions are affected by CVE-2026-18487?
How do I fix CVE-2026-18487?
Apply the vendor's patch.
Is CVE-2026-18487 being exploited?
There is no known exploitation of CVE-2026-18487 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-18487, GHSA-5w7g-jqwx-788x, UBUNTU-CVE-2026-18487.