CVE-2022-39331

Summary

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.

Affected Software

Weaknesses

• CWE-79: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

ADP Enrichment

CVE Program Container

Additional References

• https://github.com/nextcloud/security-advisories/security/advisories/GHSA-c3xh-q694-6rc5
• https://github.com/nextcloud/desktop/pull/4944
• https://hackerone.com/reports/1668028
• https://lists.debian.org/debian-lts-announce/2025/09/msg00018.html

CISA ADP Vulnrichment

• SSVC:
• Exploitation: poc
  • Automatable: no
  • Technical Impact: partial

References

• https://github.com/nextcloud/security-advisories/security/advisories/GHSA-c3xh-q694-6rc5
• https://github.com/nextcloud/desktop/pull/4944
• https://hackerone.com/reports/1668028

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