CVE-2025-59901Network attack vector

Session data theft via reflected POST input

Published Jan 28, 2026 · Updated Jan 28, 2026

Reflected XSS in Flexense DiskPulse Enterprise and SyncBreeze Enterprise 10.4.18 allows remote authenticated users to steal session data. The /monitor_directory?sid= handler in DiskPulse reflects an insufficiently validated monitor_directory POST value; INCIBE does not disclose the SyncBreeze locus. Exploitation requires an authenticated request and active interaction by another authenticated user, with session-information theft as the published consequence.

CVSS severity8.5
High
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in Flexense DiskPulse Enterprise and SyncBreeze Enterprise 10.4.18 allows remote authenticated users to steal session data. The /monitor_directory?sid= handler in DiskPulse reflects an insufficiently validated monitor_directory POST value; INCIBE does not disclose the SyncBreeze locus. Exploitation requires an authenticated request and active interaction by another authenticated user, with session-information theft as the published consequence.

The record

CVE
CVE-2025-59901
Published
Jan 28, 2026
Updated
Jan 28, 2026
Vendor
Flexense Ltd.
Product
DiskPulse Enterprise
Classifications
CWE-352, T1185
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 28, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 28, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=v10.4.18

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Flexense Ltd. · DiskPulse Enterpriseversion=v10.4.18
Flexense Ltd. · SyncBreeze Enterpriseversion=v10.4.18

Published CVSS scores

4.8INCIBE-CERT advisoryCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
8.5INCIBE CNA recordCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-352Cross-Site Request Forgery (CSRF)
T1185Browser Session Hijacking

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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