CVE-2021-46355
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 · uneditedOCS Inventory 2.9.1 is affected by Cross Site Scripting (XSS). To exploit the vulnerability, the attacker needs to manipulate the name of some device on your computer, such as a printer, replacing the device name with some malicious code that allows the execution of Stored Cross-site Scripting (XSS).
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 confidenceOCS Inventory 2.9.1 contains a stored Cross-Site Scripting (XSS) vulnerability where an attacker can inject malicious JavaScript code through device names (such as printers). When other users view the affected device information in the inventory management interface, the embedded script executes in their browser session.
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= 2.9.1CVSS 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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Verify OCS Inventory versionCheck the installed OCS Inventory version by reviewing version files, the web interface footer, or database version records. Compare against the affected version 2.9.1.Affected if The installed version is exactly 2.9.1
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Confirm web interface is activeDetermine if the OCS Inventory web management console is deployed and accessible. This is required for the XSS to be triggered when users view device information.Affected if The web interface is enabled and reachable by users
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Examine device name storageReview the database table where device names are stored (commonly devices or hardware tables) or inspect device entries through the admin console for unexpected characters in device name fields.Affected if Device name fields accept and store unsanitized user-supplied input containing HTML or script tags
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Check device display functionalityVerify that the device information page renders device names without output encoding when viewed through the web interface.Affected if Device names are displayed in the web interface without proper output encoding
A user is affected if running OCS Inventory version 2.9.1 with the web interface enabled and device names containing malicious script payloads are rendered without encoding when viewed by other 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 dataImplement input validation and output encoding for all device name fields and user-supplied data. Sanitize special characters and script tags before storing device names and encode output when displaying device information in the web interface.
- Consultation6.0 h
- Implementation12.0 h
- Testing6.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $7,968.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-46355 — 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-2021-46355 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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