CVE-2025-66548 (GCVE-0-2025-66548)

Vulnerability from cvelistv5 – Published: 2025-12-05 17:26 – Updated: 2025-12-08 20:12
VLAI
Title
Nextcloud Deck app allows to spoof file extensions by using RTLO characters
Summary
Nextcloud Deck is a kanban style organization tool aimed at personal planning and project organization for teams integrated with Nextcloud. Prior to 1.12.7, 1.14.4, and 1.15.1, file extension can be spoofed by using RTLO characters, tricking users into download files with a different extension than what is displayed. This vulnerability is fixed in 1.12.7, 1.14.4, and 1.15.1.
Severity
3.3 (Low)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-12-08 20:11 UTC
CWE
  • CWE-116 - Improper Encoding or Escaping of Output
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7737 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
nextcloud security-advisories Affected: >= 1.15.0-beta.1, < 1.15.1
Affected: >= 1.14.0-beta.1, < 1.14.4
Affected: < 1.12.7
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