CVE-2024-27126
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 · uneditedA cross-site scripting (XSS) vulnerability has been reported to affect Notes Station 3. If exploited, the vulnerability could allow authenticated users to inject malicious code via a network. We have already fixed the vulnerability in the following versions: Notes Station 3 3.9.6 and later
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 confidenceA stored cross-site scripting (XSS) vulnerability exists in QNAP Notes Station 3, allowing authenticated users to inject malicious JavaScript or HTML code through network requests. This occurs due to insufficient input validation on user-supplied data that gets rendered in the web interface without proper sanitization.
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>= 3.9.0, < 3.9.6CVSS 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 Notes Station 3 is installedAccess the QNAP admin interface and navigate to the App Center to confirm Notes Station 3 is installed, or run 'qpkg info NotesStation3' via SSH if QNAP CLI tools are availableAffected if Notes Station 3 is installed and running on the system
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Check installed version of Notes Station 3In QNAP App Center, click on Notes Station 3 and view the version information, or check via command line with 'qpkg -e NotesStation3 --version'Affected if The installed version is 3.9.0 through 3.9.5 (any version >= 3.9.0 but < 3.9.6)
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Confirm web interface accessibilityAttempt to access Notes Station 3 web interface by navigating to the QNAP IP with the Notes Station 3 port (typically port 8080 or configured custom port), or check if the application is listening on network ports via 'netstat -tulpn | grep -i notes'Affected if The Notes Station 3 web interface is accessible over the network
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Verify authentication is required for Notes Station 3Check the Notes Station 3 security settings in the QNAP admin panel under Notes Station 3 > Settings > Security, or examine if the web interface prompts for login credentials when accessedAffected if Authentication is disabled or accessible to untrusted users, making the stored XSS exploitable
The system is affected if Notes Station 3 is installed with a version between 3.9.0 and 3.9.5 inclusive, and the web interface is network-accessible to authenticated users who could inject malicious scripts.
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.
dbcve · scoped3.9.6
Update Notes Station 3 to version 3.9.6 or later. Until then, restrict administrative access to trusted users only and monitor for suspicious user activity.
Notes Station 3 version 3.9.6 or later
- Log in to the QNAP NAS admin interface
- Navigate to the Application Manager or QApp Center
- Locate Notes Station 3 in the installed applications
- Check the current version to confirm it is below 3.9.6
- Use the update or upgrade option within the QNAP interface to update Notes Station 3 to version 3.9.6 or later
- Verify the upgrade was successful by checking the application version again
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2024-27126 — 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-2024-27126 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
- No spam, self-promotion, credentials, or personal data