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

Quick assessment

Affected
GNOME Epiphany
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

GNOME Epiphany是GNOME基金会开源的一款轻量级的网页浏览器。 GNOME Epiphany 49.2版本存在处理逻辑错误漏洞，该漏洞源于浏览器读取网址时处理不当，可能允许攻击者伪造地址栏中显示的域名，创建逼真的钓鱼页面，欺骗用户信任恶意网站。

CVSS 5.4 · Medium EPSS 0.34% · P26

Affected Version Matrix 1

VendorProduct Version RangeStatus
GNOME Epiphany 49.2< * affected
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I. Basic Information for CVE-2026-18487

Vulnerability Information
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Vulnerability Title
Epiphany: address bar / host spoofing via userinfo in ephy_uri_get_decoded_host()
Source: CVE Program / CVE List V5
Vulnerability 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: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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
关键信息的UI错误表达
Source: CVE Program / CVE List V5
Vulnerability Title
GNOME Epiphany 处理逻辑错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GNOME Epiphany是GNOME基金会开源的一款轻量级的网页浏览器。 GNOME Epiphany 49.2版本存在处理逻辑错误漏洞，该漏洞源于浏览器读取网址时处理不当，可能允许攻击者伪造地址栏中显示的域名，创建逼真的钓鱼页面，欺骗用户信任恶意网站。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
GNOME Epiphany 49.2 ~ * -

II. Public POCs for CVE-2026-18487

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III. Intelligence Information for CVE-2026-18487

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Patches & Fixes for CVE-2026-18487 (2)

Vendor Advisories for CVE-2026-18487 (2)

IV. Related Vulnerabilities

Same vendor: GNOME
Same weakness: CWE-451

V. Comments for CVE-2026-18487

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