6.1

CVE-2023-23942: nextcloud desktop Cross-site Scripting

CVSS: 6.1v3.1MediumModified
AliasesUBUNTU-CVE-2023-23942DEBIAN-CVE-2023-23942
Published 06-02-2023Last modified 10-03-2025
Open JSON

Vulnerability summary

CVE-2023-23942 is a medium (CVSS 6.1) Cross-site Scripting vulnerability in nextcloud desktop. EPSS estimates a 0.68% chance of exploitation in the next 30 days, higher than 51.6% of scored vulnerabilities.

Overall risk
25/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.1/10
010
Medium · v3.1 (NVD)
EPSS score
0.68%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2 · Related 2
OPENSUSE-SU-2023:0090-1OPENSUSE-SU-2023:0171-1

Timeline

  1. 06-02-2023
    PublishedVulnerability first disclosed.
  2. 10-03-2025
    Last modifiedVulnerability information updated.

Description

The Nextcloud Desktop Client is a tool to synchronize files from a Nextcloud Server with your computer. Versions prior to 3.6.3 are missing sanitisation on qml labels which are used for basic HTML elements such as `strong`, `em` and `head` lines in the UI of the desktop client. The lack of sanitisation may allow for javascript injection. It is recommended that the Nextcloud Desktop Client is upgraded to 3.6.3. There are no known workarounds for this issue.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.68%

Chance of exploitation in the next 30 days

Percentile

52%

Versus all other CVEs

30-day change

0.00 pp

From 0.68% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.68%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Nextcloud2 products
Debian1 product
  • nextcloud-desktop< 3.6.4-1
Ubuntu1 product
  • nextcloud-desktopAll versions (No fix recorded)

3 vendors · 4 products

References

6 links