CVE-2026-3345
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 · uneditedIBM Langflow Desktop <=1.8.4 Langflow could allow a remote attacker to traverse directories on the system. An attacker could send a specially crafted URL request containing "dot dot" sequences (/../) to view arbitrary files on the system.
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 confidenceIBM Langflow Desktop <=1.8.4 contains a path traversal vulnerability that allows remote attackers to use '../' directory sequences in URLs to access files outside the web root directory, potentially exposing sensitive system files.
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<= 1.8.4CVSS 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
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/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 installed Langflow Desktop versionCheck the application version through its built-in about page, help menu, or by running the application with a version flag if available in the command-line interfaceAffected if The installed version is 1.8.4 or any earlier version of Langflow Desktop
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Confirm the web server component is runningVerify that Langflow Desktop's embedded web server is active by checking for the application listening on its default HTTP port (typically 7860 or 8080) using netstat or similar network utilitiesAffected if The web interface is accessible and the application is serving HTTP requests
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Check network exposure of the web interfaceDetermine if the Langflow Desktop web interface is bound to all network interfaces (0.0.0.0) or is externally accessible, which would allow remote attackers to exploit the path traversalAffected if The web interface is exposed to untrusted networks or the internet
You are affected if Langflow Desktop version 1.8.4 or earlier is installed and its web interface is running and accessible.
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 · scopedUpgrade to a version newer than 1.8.4. If upgrading is not immediately feasible, implement input validation to reject URLs containing '../' sequences and apply least-privilege file system permissions.
A version of Langflow Desktop newer than 1.8.4 (contact IBM for specific fixed release number)
- 1. Check IBM's official security advisory pages (www.ibm.com) for the most current information on this vulnerability and available fixes
- 2. Identify the latest stable version of Langflow Desktop that is newer than 1.8.4
- 3. Backup any existing Langflow configurations and data
- 4. Uninstall the current version of Langflow Desktop (<=1.8.4)
- 5. Download the updated Langflow Desktop version from IBM's official distribution channels
- 6. Install the new version following IBM's installation documentation
- 7. Restore configurations from the backup
- 8. Verify the application functions correctly with the new version
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation4.0 h
- Testing2.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,560.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-3345 — 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-2026-3345 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