Vulnerability record · CVE-2022-41882 · published 11 November 2022
CVE-2022-41882: Nextcloud desktop code injection vulnerability
Nextcloud · Desktop
The Nextcloud Desktop Client is a tool to synchronize files from Nextcloud Server with your computer. In version 3.6.0, if a user received a malicious file share and has it synced locally or the virtual filesystem enabled and clicked a nc://open/ link it will open the default editor for the file type of the shared file, which on Windows can also sometimes mean that a file depending on the type, e.g. "vbs", is being executed. It is recommended that the Nextcloud Desktop client is upgraded to version 3.6.1. As a workaround, users can block the Nextcloud Desktop client 3.6.0 by setting the `minimum.supported.desktop.version` system config to `3.6.1` on the server, so new files designed to use this attack vector are not downloaded anymore. Already existing files can still be used. Another workaround would be to enforce shares to be accepted by setting the `sharing.force_share_accept` system config to `true` on the server, so new files designed to use this attack vector are not downloaded anymore. Already existing shares can still be abused.
Description
The Nextcloud Desktop Client is a tool to synchronize files from Nextcloud Server with your computer. In version 3.6.0, if a user received a malicious file share and has it synced locally or the virtual filesystem enabled and clicked a nc://open/ link it will open the default editor for the file type of the shared file, which on Windows can also sometimes mean that a file depending on the type, e.g. "vbs", is being executed. It is recommended that the Nextcloud Desktop client is upgraded to version 3.6.1. As a workaround, users can block the Nextcloud Desktop client 3.6.0 by setting the `minimum.supported.desktop.version` system config to `3.6.1` on the server, so new files designed to use this attack vector are not downloaded anymore. Already existing files can still be used. Another workaround would be to enforce shares to be accepted by setting the `sharing.force_share_accept` system config to `true` on the server, so new files designed to use this attack vector are not downloaded anymore. Already existing shares can still be abused.
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Affected products
1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.
References
| Link | Tags |
|---|---|
| https://github.com/nextcloud/desktop/pull/5039 | PatchThird Party Advisory |
| https://github.com/nextcloud/desktop/releases/tag/v3.6.1 | Release NotesThird Party Advisory |
| https://github.com/nextcloud/security-advisories/security/advisories/GHSA-3w86-rm38-8w63 | Third Party Advisory |
| https://github.com/nextcloud/server/pull/34559 | PatchThird Party Advisory |
| https://github.com/nextcloud/desktop/pull/5039 | PatchThird Party Advisory |
| https://github.com/nextcloud/desktop/releases/tag/v3.6.1 | Release NotesThird Party Advisory |
| https://github.com/nextcloud/security-advisories/security/advisories/GHSA-3w86-rm38-8w63 | Third Party Advisory |
| https://github.com/nextcloud/server/pull/34559 | PatchThird Party Advisory |
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Related vulnerabilities
Same products first, then exploited flaws of the same weakness class.
Source: NIST National Vulnerability Database (record CVE-2022-41882), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.
