What is CVE-2025-3839?

CVE-2025-3839 is a high-severity vulnerability, classified under CWE-356. CVSS score: 8.0/10. Published 2026-01-23.

How severe is CVE-2025-3839?

High severity. CVSS v3 base score is 8.0 out of 10.

CVE-2025-3839

CVE-2025-3839

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 exp…

EPSS: 0.000 (5.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.0 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N.

Weakness classification (CWE)

CWE-356

References

access.redhat.com/security/cve/CVE-2025-3839 (vdb-entry, x_refsource_REDHAT)
RHBZ#2361430 (issue-tracking, x_refsource_REDHAT)

Frequently asked questions

What is CVE-2025-3839?: CVE-2025-3839 is a high-severity vulnerability, classified under CWE-356. CVSS score: 8.0/10. Published 2026-01-23.
How severe is CVE-2025-3839?: High severity. CVSS v3 base score is 8.0 out of 10.