CVE-2017-15892
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 · uneditedMultiple cross-site scripting (XSS) vulnerabilities in Slash Command Creator in Synology Chat before 2.0.0-1124 allow remote authenticated users to inject arbitrary web script or HTML via (1) COMMAND, (2) COMMANDS INSTRUCTION, or (3) DESCRIPTION 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) vulnerabilities exist in Synology Chat's Slash Command Creator functionality. Authenticated users can inject malicious scripts via the COMMAND, COMMANDS INSTRUCTION, or DESCRIPTION parameters when creating slash commands. User-supplied input is rendered without proper sanitization, allowing arbitrary HTML or JavaScript execution in other users' browsers.
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< 2.0.0-1124CVSS 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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Verify Synology Chat is installedAccess Synology DSM, open Package Center, and look for Synology Chat in the installed package list. Alternatively, run 'synopkg list' from the command line to list installed packages.Affected if Synology Chat is not found in the installed packages, the system is not affected by this vulnerability.
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Check the installed Synology Chat versionIn Package Center, click on Synology Chat and view the version information. From CLI, run 'synopkg info SynologyChat' to retrieve the exact version number.Affected if The installed version is lower than 2.0.0-1124 (e.g., 2.0.0-1000, 1.3.x, etc.), indicating the system is within the vulnerable version range.
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Confirm access to Slash Command Creator featureLog into Synology Chat as an authenticated user, navigate to the workspace settings, and look for the Slash Command Creator or slash commands management area where users can create custom commands.Affected if The Slash Command Creator interface is accessible to authenticated users, meaning the XSS vulnerability in the COMMAND, COMMANDS INSTRUCTION, or DESCRIPTION fields can be exploited.
The environment is affected if Synology Chat is installed with a version lower than 2.0.0-1124 and the Slash Command Creator feature is accessible to authenticated users.
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 data2.0.0-1124
Update Synology Chat to version 2.0.0-1124 or later. If immediate patching is not feasible, implement input validation and output encoding on the affected parameters as an interim control.
- Consultation2.0 h
- Implementation3.0 h
- Testing2.0 h
- Review / QA1.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2017-15892 — 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-2017-15892 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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