CVE-2024-8028
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 vulnerability in danswer-ai/danswer v0.3.94 allows an attacker to cause a Denial of Service (DoS) by uploading a file with a malformed multipart boundary. By appending a large number of characters to the end of the multipart boundary, the server continuously processes each character, rendering the application inaccessible. This issue can be exploited by sending a single crafted request, affecting all users on the server.
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 confidenceIn danswer-ai/danswer v0.3.94, the multipart form data parsing logic fails to properly validate or limit the length of the multipart boundary. An attacker can append an excessive number of characters to the boundary, causing the server to enter an infinite processing loop for each character, resulting in CPU exhaustion and service unavailability for all users.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS 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
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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 Danswer installationCheck if Danswer is installed by searching for its package or service: look for 'danswer' in running processes, installed Python packages (pip list | grep danswer), or Docker containers.Affected if Danswer is not installed, this CVE does not apply.
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Determine installed Danswer versionRun the version check command for your installation method. For Docker: check the image tag or inspect the container. For source: check the git tag or pyproject.toml version field.Affected if The installed version is v0.3.94 exactly.
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Check for vulnerable multipart parsing codeInspect the Danswer source code for multipart form handling. Look for file upload endpoints in the codebase, specifically any code handling 'multipart/form-data' requests.Affected if The multipart parsing logic is present and handles boundary parameters without explicit length validation.
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Verify file upload endpoint exposureCheck if the Danswer web server exposes file upload functionality. Look for API endpoints that accept file uploads, typically on paths like /api/file/upload or similar upload routes.Affected if File upload endpoints are accessible and accept multipart form data.
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Confirm network accessibilityDetermine if the Danswer server is reachable over the network. Check if port 8080 or configured HTTP ports are exposed to network traffic.Affected if The server is network-accessible, making it exploitable by remote attackers.
A user is affected if running danswer v0.3.94 with network-accessible file upload endpoints that handle multipart form data.
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 proper boundary length validation and impose maximum limits on multipart boundary processing to prevent unbounded parsing loops. Consider adding request size limits and timeout controls for file upload endpoints.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-8028 — 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-2024-8028 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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