medium6.7
CVE-2023-28997
The Nextcloud Desktop Client is a tool to synchronize files from Nextcloud Server.
Impact
The Nextcloud Desktop Client is a tool to synchronize files from Nextcloud Server. Starting with version 3.0.0 and prior to version 3.6.5, a malicious server administrator can recover and modify the contents of end-to-end encrypted files. Users should upgrade the Nextcloud Desktop client to 3.6.5 to receive a patch. No known workarounds are available.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Nextcloud | Desktop | from 3.0.0 before 3.6.5 |
Weakness classification
References
- NVD record
- CVE.org record
- https://ethz.ch/content/dam/ethz/special-interest/infk/inst-infsec/appliedcrypto/education/theses/report_DanieleCoppola.pdf
- https://github.com/nextcloud/desktop/pull/5324
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-4p33-rw27-j5fc
- https://ethz.ch/content/dam/ethz/special-interest/infk/inst-infsec/appliedcrypto/education/theses/report_DanieleCoppola.pdf
- https://github.com/nextcloud/desktop/pull/5324
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-4p33-rw27-j5fc
- https://lists.debian.org/debian-lts-announce/2025/09/msg00018.html