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CVE-2025-3839— Epiphany: insecure external protocol invocation in epiphany

Quick assessment

Affected
CVE-2025-3839
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开源的一个简洁、干净、美观的网页视图。 GNOME Epiphany存在安全漏洞，该漏洞源于设计缺陷，可能导致通过受信任UI行为在客户端设备上执行代码。

CVSS 8.0 · High EPSS 0.39% · P32

I. Basic Information for CVE-2025-3839

Vulnerability Information
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Vulnerability Title
Epiphany: insecure external protocol invocation in epiphany
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in Epiphany, a tool that allows websites to open external URL handler applications with minimal user interaction. This design can be misused to exploit vulnerabilities within those handlers, making them appear remotely exploitable. The browser fails to properly warn or gate this action, resulting in potential code execution on the client device via trusted UI behavior.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
产品UI接口未警示用户不安全动作
Source: CVE Program / CVE List V5
Vulnerability Title
GNOME Epiphany 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GNOME Epiphany是GNOME开源的一个简洁、干净、美观的网页视图。 GNOME Epiphany存在安全漏洞，该漏洞源于设计缺陷，可能导致通过受信任UI行为在客户端设备上执行代码。
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)

II. Public POCs for CVE-2025-3839

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III. Intelligence Information for CVE-2025-3839

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Vendor Advisories for CVE-2025-3839 (1)

IV. Related Vulnerabilities

Same weakness: CWE-356

V. Comments for CVE-2025-3839

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