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Vulnerability record · CVE-2020-15502 · published 2 July 2020

CVE-2020-15502: Duckduckgo information exposure vulnerability

Duckduckgo · Duckduckgo

The DuckDuckGo application through 5.58.0 for Android, and through 7.47.1.0 for iOS, sends hostnames of visited web sites within HTTPS .ico requests to servers in the duckduckgo.com domain, which might make visit data available temporarily at a Potentially Unwanted Endpoint. NOTE: the vendor has stated "the favicon service adheres to our strict privacy policy.

7.5 CVSS 3.1 High EPSS 1.5% · top 26.2% CWE-200 · Information exposure
7.5CVSS 3.1 base score, v2 5.0
1.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
10References
17 Jun 2026Last modified by NVD

Description

The DuckDuckGo application through 5.58.0 for Android, and through 7.47.1.0 for iOS, sends hostnames of visited web sites within HTTPS .ico requests to servers in the duckduckgo.com domain, which might make visit data available temporarily at a Potentially Unwanted Endpoint. NOTE: the vendor has stated "the favicon service adheres to our strict privacy policy.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

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

References

LinkTags
https://github.com/duckduckgo/Android/blob/e2f2d54a6b4452277467db403a3546512401b493/app/src/main/java/com/duckduckgo/app PatchThird Party Advisory
https://github.com/duckduckgo/Android/issues/527 Third Party Advisory
https://github.com/duckduckgo/iOS/blob/1ae03d7221180bd6791cf6f7f06922a96335cf75/Core/AppUrls.swift#L98-L100 Third Party Advisory
https://news.ycombinator.com/item?id=23708166 PatchThird Party Advisory
https://news.ycombinator.com/item?id=23711597 Third Party Advisory
https://github.com/duckduckgo/Android/blob/e2f2d54a6b4452277467db403a3546512401b493/app/src/main/java/com/duckduckgo/app PatchThird Party Advisory
https://github.com/duckduckgo/Android/issues/527 Third Party Advisory
https://github.com/duckduckgo/iOS/blob/1ae03d7221180bd6791cf6f7f06922a96335cf75/Core/AppUrls.swift#L98-L100 Third Party Advisory
https://news.ycombinator.com/item?id=23708166 PatchThird Party Advisory
https://news.ycombinator.com/item?id=23711597 Third Party Advisory

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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-2020-15502), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.