BIT-nextcloud-2021-32727

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Import Source
https://github.com/bitnami/vulndb/tree/main/data/nextcloud/BIT-nextcloud-2021-32727.json
JSON Data
https://api.osv.dev/v1/vulns/BIT-nextcloud-2021-32727
Aliases
Published
2026-07-12T23:47:43.538Z
Modified
2026-07-13T06:26:28.410479614Z
Summary
End-to-end encryption device setup did not verify public key
Details

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. As a workaround, do not add additional end-to-end encrypted devices to a user account.

Database specific 
{
    "cpes": [
        "cpe:2.3:a:nextcloud:nextcloud:*:*:*:*:*:android:*:*"
    ],
    "severity": "High"
}
References

Affected packages

Bitnami / nextcloud

Package

Name
nextcloud
Purl
pkg:bitnami/nextcloud

Severity

  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator

Affected ranges

Type
SEMVER
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.16.1

Database specific

source 
"https://github.com/bitnami/vulndb/tree/main/data/nextcloud/BIT-nextcloud-2021-32727.json"