{"api_version":"1","generated_at":"2026-07-24T21:11:02+00:00","cve":"CVE-2021-32727","urls":{"html":"https://cve.report/CVE-2021-32727","api":"https://cve.report/api/cve/CVE-2021-32727.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2021-32727","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-32727"},"summary":{"title":"CVE-2021-32727","description":"Nextcloud Android Client is the Android client for Nextcloud. Clients using the Nextcloud end-to-end encryption feature download the public and private key via an API endpoint. In versions prior to 3.16.1, the Nextcloud Android client skipped a step that involved the client checking if a private key belonged to a previously downloaded public certificate. If the Nextcloud instance served a malicious public key, the data would be encrypted for this key and thus could be accessible to a malicious actor. The vulnerability is patched in version 3.16.1. 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