CVE-2022-39331

low-risk
Published 2022-11-25

Nexcloud desktop is the Desktop sync client for Nextcloud. An attacker can inject arbitrary HyperText Markup Language into the Desktop Client application in the notifications. It is recommended that the Nextcloud Desktop client is upgraded to 3.6.1. There are no known workarounds for this issue.

Do I need to act?

-
0.37% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
4
CVSS 4.6/10 Medium
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Nextcloud

References (7)

Patch https://github.com/nextcloud/desktop/pull/4944
Third Party Advisory https://github.com/nextcloud/security-advisories/security/advisories/GHSA-c3xh-q...
Exploit https://hackerone.com/reports/1668028
Patch https://github.com/nextcloud/desktop/pull/4944
Third Party Advisory https://github.com/nextcloud/security-advisories/security/advisories/GHSA-c3xh-q...
Exploit https://hackerone.com/reports/1668028
https://lists.debian.org/debian-lts-announce/2025/09/msg00018.html
25
/ 100
low-risk
Severity 19/34 · Moderate
Exploitability 1/34 · Minimal
Exposure 5/34 · Minimal