CVE-2025-66549 (GCVE-0-2025-66549)
Vulnerability from cvelistv5 – Published: 2025-12-05 17:47 – Updated: 2025-12-08 19:54
VLAI
EPSS
VEX
Title
Nextcloud Desktop discloses information when attempting to lock a file inside a end-to-end encrypted directory
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.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-12-08 19:53 UTC
CWE
- CWE-209 - Generation of Error Message Containing Sensitive Information
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/nextcloud/security-advisories/… | x_refsource_CONFIRM |
| https://github.com/nextcloud/desktop/pull/8330 | x_refsource_MISC |
| https://github.com/nextcloud/desktop/commit/36d6c… | x_refsource_MISC |
| https://hackerone.com/reports/3159877 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| nextcloud | security-advisories |
Affected:
< 3.16.5
|
guessed |
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Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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