TI-2018-04998 Aliases CVE-2018-6849 GHSA-637h-2rp3-w54w

In the WebRTC component in DuckDuckGo 4.2.0, after visiting a web site that attempts to…

MEDIUM 43CWE-200Published 2018-04-01 · Updated 2024-08-05

Key facts

Attack vector: Network
Privileges required: None
User interaction: Required
Attack complexity: Low
Impact type: Information disclosure
Confidentiality · integrity · availability: Low · None · None
Fix status: No fix listed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-200.

Summary

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.

Why it matters now

EPSS 0.28713 98th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by the CNA and NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:duckduckgo:duckduckgo:4.2.0:::::::*	4.2.0	Vulnerable	DuckDuckGo

cpe:2.3:a:duckduckgo:duckduckgo:4.2.0:*:*:*:*:*:*:* Versions 4.2.0 Vulnerable ·DuckDuckGo

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2018-6849
2026-10-03 Alias added: GHSA-637h-2rp3-w54w

References

Exploit 1

44403

Advisory 4

TI-2021-20209 The DuckDuckGo browser 7.64.4 on iOS allows Address Bar Spoofing due to mishandling of… CVSS 3.1HIGH 8.2
TI-2020-12206 The DuckDuckGo application through 5.58.0 for Android, and through 7.47.1.0 for iOS… CVSS 3.1HIGH 7.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences