CVE-2025-33203
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 · uneditedNVIDIA NeMo Agent Toolkit UI for Web contains a vulnerability in the chat API endpoint where an attacker may cause a Server-Side Request Forgery. A successful exploit of this vulnerability may lead to information disclosure and denial of service.
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 confidenceNVIDIA NeMo Agent Toolkit UI for Web contains a Server-Side Request Forgery (SSRF) vulnerability in its chat API endpoint. An attacker can manipulate the endpoint to make the server perform requests to arbitrary internal or external resources, potentially accessing sensitive internal services, cloud metadata, or causing denial of service.
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
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- Low
- Availability
- Low
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L
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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Confirm NVIDIA NeMo Agent Toolkit UI installationLocate the NeMo Agent Toolkit installation directory or check running services for nemo or related processesAffected if The software is present and running on the system
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Identify the chat API endpointReview application routing configuration or API documentation to locate the chat API endpoint path (typically /chat or /api/chat)Affected if A chat API endpoint exists and is accessible over the network
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Verify endpoint accepts URL inputSend a test request to the chat API with a controllable URL parameter and observe if the server attempts to fetch or resolve itAffected if The endpoint accepts URL parameters and processes them without validation
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Check network egress configurationReview firewall rules or network configuration to determine if the server has outbound network accessAffected if The application server can make outbound HTTP requests to arbitrary destinations
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Confirm lack of input allowlistingExamine the chat API configuration or proxy settings for any URL/hostname validation or allowlist controlsAffected if No input validation or allowlisting is configured for the chat API endpoint
A user is affected if NVIDIA NeMo Agent Toolkit UI is installed, the chat API endpoint is accessible, and the endpoint lacks proper URL input validation allowing SSRF exploitation.
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 strict input validation and allowlist controls for the chat API endpoint to restrict URL/hostname inputs to trusted destinations. Additionally, apply network segmentation and disable unnecessary outbound communication from the application server.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA3.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2025-33203 — 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-2025-33203 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