SB20260727379 - Improper access control in Dify
Published: July 27, 2026
Security Bulletin ID
SB20260727379
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper access control (CVE-ID: N/A)
CWE-ID: CWE-284 - Improper Access Control
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote user to disclose sensitive information.
The vulnerability exists due to improper access control in the /console/api/files/<file_id>/preview endpoint and FileService.get_file_preview() when handling preview requests for user-supplied file identifiers. A remote user can request a preview for another tenant's file_id to disclose sensitive information.
Exploitation requires knowledge of a victim file_id.
Remediation
Install update from vendor's website.