What’s Vulnerable › Vulnerabilities

CVE-2020-15502

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-07-02 · updated 2026-06-17
• Weakness: CWE-200

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.

Affected products

• Duckduckgo: through 5.58.0; through 7.47.1.0

References

• https://github.com/duckduckgo/Android/blob/e2f2d54a6b4452277467db403a3546512401b493/app/src/main/java/com/duckduckgo/app/global/UriExtension.kt#L83-L88
• https://github.com/duckduckgo/Android/issues/527
• https://github.com/duckduckgo/iOS/blob/1ae03d7221180bd6791cf6f7f06922a96335cf75/Core/AppUrls.swift#L98-L100
• https://news.ycombinator.com/item?id=23708166
• https://news.ycombinator.com/item?id=23711597
• https://github.com/duckduckgo/Android/blob/e2f2d54a6b4452277467db403a3546512401b493/app/src/main/java/com/duckduckgo/app/global/UriExtension.kt#L83-L88
• https://github.com/duckduckgo/Android/issues/527
• https://github.com/duckduckgo/iOS/blob/1ae03d7221180bd6791cf6f7f06922a96335cf75/Core/AppUrls.swift#L98-L100
• https://news.ycombinator.com/item?id=23708166
• https://news.ycombinator.com/item?id=23711597

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