CVE-2025-3839 - CVE House
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Status published High CVE-2025-3839

Epiphany: insecure external protocol invocation in epiphany

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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Red Hat would like to thank Michael Catanzaro for reporting this issue.

References

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Affected Vendor

Affected Software

Unknown
Vulnerable Versions:
0, 48.0

Timeline

Official Publish: January 23rd, 2026
Last Modified: January 23rd, 2026
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N

Weaknesses (CWE)

CWE-356

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.