Authentication Bypass Vulnerability in FileRise Web File Manager
CVE-2026-64856

3.7LOW

Key Information:

Vendor

Error311

Status
Filerise
Vendor
CVE Published:
14 October 2026

What is CVE-2026-64856?

The FileRise web-based file manager, prior to version 3.20.0, contains an authentication bypass vulnerability in the /api/file/snippet.php endpoint. This vulnerability lacks a standard authenticated-session guard before processing requests for short text previews. While ACL checks are performed during the request handling, unauthenticated requests are permitted to access the ACL evaluation phase rather than receiving an immediate access denial. Only specific misconfigurations such as unusual proxy headers or incorrect ACL settings can potentially lead to unauthorized file access. It is crucial for users to upgrade to version 3.20.0 or later to mitigate this risk.

Affected Version(s)

FileRise < 3.20.0

References

https://github.com/error311/FileRise/security/advisories/...
x_refsource_CONFIRM
https://github.com/error311/FileRise/commit/8c0875bf8f7fd...
x_refsource_MISC
https://github.com/error311/FileRise/releases/tag/v3.20.0
x_refsource_MISC

CVSS V3.1

Score:
3.7
Severity:
LOW
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.