CVE-2023-28997

Name
CVE-2023-28997
Description
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.
NVD Severity
medium
Other trackers
CVE, NVD, CERT, CVE Details, CIRCL, Arch Linux, Debian, Red Hat, Ubuntu, Gentoo, SUSE (Bugzilla), SUSE (CVE), Mageia
Mailing lists
oss-security, full-disclosure, bugtraq
Exploits
Exploit DB, Metasploit
Forges
GitHub (code, issues), Aports (code, issues)

References

Type URI
MISC https://github.com/nextcloud/desktop/pull/5324
CONFIRM https://github.com/nextcloud/security-advisories/security/advisories/GHSA-4p33-rw27-j5fc
MISC https://ethz.ch/content/dam/ethz/special-interest/infk/inst-infsec/appliedcrypto/education/theses/report_DanieleCoppola.pdf
af854a3a-2127-422b-91ae-364da2661108 https://lists.debian.org/debian-lts-announce/2025/09/msg00018.html

Match rules

CPE URI Source package Min version Max version
security-advisories >= 3.0.0 < 3.6.5

Vulnerable and fixed packages

Source package Branch Version Maintainer Status
nextcloud-client edge-community 3.6.6-r0 Leonardo Arena <rnalrd@alpinelinux.org> fixed
nextcloud-client 3.22-community 3.6.6-r0 None fixed
nextcloud-client 3.21-community 3.6.6-r0 None fixed
nextcloud-client 3.20-community 3.6.6-r0 None fixed
nextcloud-client 3.19-community 3.6.6-r0 None fixed
nextcloud-client 3.18-community 3.6.6-r0 None fixed