CVE-2023-2000
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 · uneditedMattermost Desktop App fails to validate a mattermost server redirection and navigates to an arbitrary website
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 confidenceThe Mattermost Desktop App fails to validate URL redirections from the Mattermost server, allowing an attacker to craft malicious server responses that cause the desktop client to navigate to arbitrary websites. This could enable phishing attacks or delivery of malicious content through the trusted desktop application.
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<= 5.2.2CVSS 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 Mattermost Desktop installationLocate the Mattermost Desktop application installation: On Windows check %LOCALAPPDATA%\Programs\Mattermost or C:\Program Files\Mattermost; On macOS check /Applications/Mattermost.app; On Linux check /usr/bin/mattermost or your package managerAffected if Mattermost Desktop application is installed on the system
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Determine installed version numberOpen the Mattermost Desktop app, then navigate to Help > About Mattermost (or equivalent menu item depending on OS) to view the exact version number, or check the application metadata in the installation directoryAffected if Unable to determine the version number of the installed application
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Compare version to affected rangeCompare your installed version (e.g., from About menu or app metadata) against the affected version range: any version 5.2.2 or lower is within the vulnerable rangeAffected if Installed version is 5.2.2 or any version number lower than 5.2.2 (e.g., 5.2.0, 5.1.0, 5.0.0, etc.)
You are affected if Mattermost Desktop is installed and its version is 5.2.2 or lower, since the vulnerability exists in how the client validates URL redirections from the server.
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 dataUsers should exercise caution with links and ensure they are using the latest version of the Mattermost Desktop App. Application-level fix requires implementing proper URL validation for server-initiated redirects before navigation occurs.
- Consultation2.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-2000 — 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-2023-2000 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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