CVE-2025-66549

Summary

Nextcloud Desktop is the desktop sync client for Nextcloud. Prior to 3.16.5, when trying to manually lock a file inside an end-to-end encrypted directory, the path of the file was sent to the server unencrypted, making it possible for administrators to see it in log files. This vulnerability is fixed in 3.16.5.

Affected Software

Weaknesses

• CWE-209: CWE-209: Generation of Error Message Containing Sensitive Information

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: partial

References

• https://github.com/nextcloud/security-advisories/security/advisories/GHSA-h9xj-qh76-q3hw
• https://github.com/nextcloud/desktop/pull/8330
• https://github.com/nextcloud/desktop/commit/36d6c234d42b06a6f2e9de3e413a5c3c625edad6
• https://hackerone.com/reports/3159877

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