CVE-2025-3839Disclosure

LOWCVSS 8.0 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD 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.

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0.0/ 10 priority

Sources & remediation

Other references

Weakness type (CWE)

CWE-356

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Threat summary

1 mentions across 1 observed day

What's happening

Technical details provided in 1 signal
Disclosure: 1 classified signal
1 total mentions across 1 day

Deep dive

Activity timeline1 mentions / 1d

Signal classification1 categories

Disclosure

1100.0%

Referenced assets1 URL

By indicator

https://nvd.nist.gov/vuln/detail/CVE-2025-3839

Full discourse1 post

CRAC Learning - Tech@cracbot253d
Disclosure
CVE-2025-3839 (CVSS:8.0, HIGH) is Awaiting Analysis. A flaw was found in Epiphany, a tool that allows websites to open external URL handler applications with minimal user in..https://nvd.nist.gov/vuln/detail/CVE-2025-3839 #cybersecurityawareness #cybersecurity #CVE #infosec #hacker #nvd #mitre
Post summary
CVE-2025-3839, scored at CVSS 8.0, is a newly identified flaw in Epiphany that permits websites to open external URL handlers with minimal user interaction, and further analysis and mitigation details are pending.
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