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TI-2021-20209 Aliases CVE-2021-44683GHSA-5mvj-2m3j-7cv3

The DuckDuckGo browser 7.64.4 on iOS allows Address Bar Spoofing due to mishandling of…

Priority LOW 38CWE-1021Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-1021.

Summary

The DuckDuckGo browser 7.64.4 on iOS allows Address Bar Spoofing due to mishandling of the JavaScript window.open function (used to open a secondary browser window). This could be exploited by tricking users into supplying sensitive information such as credentials, because the address bar would display a legitimate URL, but content would be hosted on the attacker's web site.

Why it matters now

EPSS 0.00972 62nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by 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

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:duckduckgo:duckduckgo:*:*:*:*:*:iphone_os:*:*before 7.64.18VulnerableDuckDuckGo
  • cpe:2.3:a:duckduckgo:duckduckgo:*:*:*:*:*:iphone_os:*:* Versions before 7.64.18 Vulnerable ·DuckDuckGo

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-44683
  2. 2026-10-03 Alias added: GHSA-5mvj-2m3j-7cv3

References

  • TI-2018-04998 In the WebRTC component in DuckDuckGo 4.2.0, after visiting a web site that attempts to… CVSS 3.0MEDIUM 4.3
  • 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