CVE-2025-59900Network attack vector

Session theft via stored unsanitized form input

Published Jan 28, 2026 · Updated Jan 28, 2026

Stored XSS in Flexense SyncBreeze Enterprise and DiskPulse Enterprise 10.4.18 allows remote authenticated users to steal session data. INCIBE maps insufficient validation to command_name at /rename_command?sid=, while the CNA narrative instead names five /server_options fields. Exploitation requires low-privileged access and passive interaction by another authenticated user; effects are confined to that user's browser session.

CVSS severity5.1
Medium
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

Stored XSS in Flexense SyncBreeze Enterprise and DiskPulse Enterprise 10.4.18 allows remote authenticated users to steal session data. INCIBE maps insufficient validation to command_name at /rename_command?sid=, while the CNA narrative instead names five /server_options fields. Exploitation requires low-privileged access and passive interaction by another authenticated user; effects are confined to that user's browser session.

The record

CVE
CVE-2025-59900
Published
Jan 28, 2026
Updated
Jan 28, 2026
Vendor
Flexense Ltd.
Product
DiskPulse Enterprise
Classifications
CWE-79, T1059.007
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

5.1INCIBECVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
5.4NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A: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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript/JScript

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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