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Vulnerability record · CVE-2018-6849 · published 1 April 2018

CVE-2018-6849: Duckduckgo information exposure vulnerability

Duckduckgo · Duckduckgo

In the WebRTC component in DuckDuckGo 4.2.0, after visiting a web site that attempts to gather complete client information (such as https://ip.voidsec.com), the browser can disclose a private IP address in a STUN request.

4.3 CVSS 3.0 Medium EPSS 29% · top 1.9% CWE-200 · Information exposure
4.3CVSS 3.0 base score, v2 4.3
29%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
10References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

In the WebRTC component in DuckDuckGo 4.2.0, after visiting a web site that attempts to gather complete client information (such as https://ip.voidsec.com), the browser can disclose a private IP address in a STUN request.

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://datarift.blogspot.com/p/private-ip-leakage-using-webrtc.html Third Party Advisory
https://github.com/rapid7/metasploit-framework/pull/9538 Issue TrackingThird Party Advisory
https://news.ycombinator.com/item?id=16699270 Third Party Advisory
https://voidsec.com/vpn-leak/ Third Party Advisory
https://www.exploit-db.com/exploits/44403/ ExploitThird Party AdvisoryVDB Entry
https://datarift.blogspot.com/p/private-ip-leakage-using-webrtc.html Third Party Advisory
https://github.com/rapid7/metasploit-framework/pull/9538 Issue TrackingThird Party Advisory
https://news.ycombinator.com/item?id=16699270 Third Party Advisory
https://voidsec.com/vpn-leak/ Third Party Advisory
https://www.exploit-db.com/exploits/44403/ ExploitThird Party AdvisoryVDB Entry

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2018-6849), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.