Persistent Authenticated Cross-Site Scripting in Flexense Products
CVE-2025-59898

5.1MEDIUM

Key Information:

Vendor

FleXen Projectse

Status
Sync Breeze Enterprise Server
Disk Pulse Enterprise
Vendor
CVE Published:
28 January 2026

What is CVE-2025-59898?

A persistent authenticated Cross-Site Scripting (XSS) flaw has been identified in specific versions of Flexense products. This vulnerability arises from inadequate validation of user input in the 'exclude_dir' parameter while accessing the '/add_exclude_dir?sid=' endpoint. Attackers can exploit this weakness by delivering malicious content to authenticated users, potentially leading to unauthorized access to sensitive session information.

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Deploy the Patch

Affected Version(s)

Disk Pulse Enterprise v10.4.18

Sync Breeze Enterprise Server v10.4.18

References

https://www.incibe.es/en/incibe-cert/notices/aviso/multip...

CVSS V4

Score:
5.1
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Rafael Pedrero
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