CVE-2025-59898
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedSync Breeze Enterprise Server v10.4.18 and Disk Pulse Enterprise v10.4.18 contain a persistent authenticated Cross-Site Scripting (XSS) vulnerability. An attacker could send malicious content to an authenticated user and steal information from their session due to insufficient validation of user input in '/add_exclude_dir?sid=', affecting the 'exclude_dir' parameter.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidencePersistent authenticated XSS in Sync Breeze Enterprise v10.4.18 and Disk Pulse Enterprise v10.4.18. The 'exclude_dir' parameter in '/add_exclude_dir?sid=' lacks proper input validation, allowing malicious scripts to be stored and executed in authenticated users' browsers, potentially enabling session theft.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data= 10.4.18= 10.4.18CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- Low
- User interaction
- Required
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify installed Flexense product and versionLocate the installed Sync Breeze Enterprise or Disk Pulse Enterprise application and check its version number. This is typically shown in the application UI, in 'About' or 'Help' menu, or in the Windows Programs and Features list.Affected if The installed version is exactly 10.4.18 for either Flexense Diskpulse or Flexense Syncbreeze.
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Confirm web interface is enabledAttempt to access the web interface by opening a browser and navigating to the default HTTP port (typically port 80 or 8080) on the server where the product is installed, or the configured web server port.Affected if The web interface responds and displays the Sync Breeze or Disk Pulse login page.
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Verify authentication capabilityLog into the web interface with valid credentials or verify that a session ID (sid) can be obtained through the login process.Affected if You can obtain a valid session ID, indicating authenticated access to the application.
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Check for exclude directory featureWith an authenticated session, examine whether the '/add_exclude_dir' endpoint exists by reviewing the application's interface, checking browser developer tools for this path in network requests, or attempting to access it directly with a valid session ID.Affected if The '/add_exclude_dir?sid=' endpoint is present and accessible within the authenticated session.
You are affected if you are running Flexense Disk Pulse Enterprise or Sync Breeze Enterprise version 10.4.18, have the web interface enabled, and can access the '/add_exclude_dir' endpoint with authenticated sessions.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataApply strict input validation and output encoding to the exclude_dir parameter. Await vendor patch; temporarily restrict access to trusted users only.
- Consultation3.0 h
- Implementation6.0 h
- Testing3.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,984.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-59898 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2025-59898 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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