CVE-2018-13293
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 · uneditedCross-site scripting (XSS) vulnerability in Control Panel SSO Settings in Synology DiskStation Manager (DSM) before 6.2.1-23824 allows remote authenticated users to inject arbitrary web script or HTML via the URL 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 · high confidenceCross-site scripting (XSS) vulnerability in Synology DiskStation Manager (DSM) Control Panel SSO Settings allows authenticated users to inject arbitrary web script or HTML via the URL parameter. This is a medium-severity authenticated XSS affecting DSM versions prior to 6.2.1-23824.
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>= 5.2, < 6.2.1-23824CVSS 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:3.0/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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Confirm Synology DSM is installedAccess the device web interface or check system information via SSH with `uname -a` or inspect the device model.Affected if The device is not running Synology DiskStation Manager (DSM)
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Identify the DSM versionIn the web interface, go to Control Panel > System > General > Version, or run `cat /etc/VERSION` via SSH to retrieve the exact build number.Affected if Unable to retrieve a version number from DSM
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Compare version against affected rangeCheck if the installed version is 5.2 or higher but earlier than 6.2.1-23824. The version string typically appears as something like 6.2-23722 or 5.2-5647.Affected if Installed version is >= 5.2 and < 6.2.1-23824
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Verify SSO Settings is accessibleIn the DSM Control Panel, navigate to Application Portal or Control Panel > SSO Settings (depending on DSM version). The vulnerability exists in this specific configuration area.Affected if SSO Settings feature exists in the Control Panel and the version is in the affected range
The environment is affected if Synology DSM is installed with version 5.2 or higher but below 6.2.1-23824, and the SSO Settings feature is present in the Control Panel.
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 data6.2.1-23824
Upgrade DSM to version 6.2.1-23824 or later. If immediate patching is not possible, implement input validation and output encoding on the SSO Settings URL parameter to neutralize script injection attempts.
- Consultation2.0 h
- Implementation2.0 h
- Testing2.0 h
- Review / QA1.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2018-13293 — 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-2018-13293 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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