CVE-2023-32786
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 · uneditedIn Langchain through 0.0.155, prompt injection allows an attacker to force the service to retrieve data from an arbitrary URL, essentially providing SSRF and potentially injecting content into downstream tasks.
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 confidenceA prompt injection vulnerability in Langchain through 0.0.155 allows attackers to craft malicious prompts that force the service to fetch data from arbitrary URLs, enabling SSRF attacks and potential content injection into downstream processing tasks.
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<= 0.0.155CVSS 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
- High
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/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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Check installed Langchain versionRun 'pip show langchain' or import langchain; print(langchain.__version__) to determine the installed versionAffected if Version is 0.0.155 or lower
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Verify if user prompts are processedInspect your application code to confirm it accepts and processes user-supplied prompts through Langchain componentsAffected if Your application directly processes untrusted user prompts without sanitization
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Identify web fetching capabilities in useReview Langchain component usage - check for tools like 'RequestsHttpTool', 'HTTPRequestsTool', or similar HTTP-fetching tools initialized in your chainAffected if Your Langchain setup includes tools or components that can make outbound HTTP requests
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Confirm network accessibility from the environmentAttempt a test outbound connection from the server (e.g., curl or python request to a known endpoint) or review network security groups/firewall rulesAffected if The environment allows outbound network connections from the Langchain process
You are affected if your installed Langchain version is 0.0.155 or lower AND your application processes user-provided prompts through Langchain with outbound network capabilities enabled.
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 · scopedUpdate to a patched version of LangChain (0.0.156 or later), implement strict input validation and sanitization for user-provided prompts, and apply network segmentation to restrict outbound requests from LLM-integrated services.
langchain >= 0.0.156 (or latest stable version)
- 1. Identify the current Langchain version in your project by checking your requirements.txt, setup.py, or package-lock.json
- 2. Upgrade Langchain to a version newer than 0.0.155 using pip: pip install langchain>=0.0.156
- 3. Alternatively, upgrade to the latest stable version: pip install --upgrade langchain
- 4. After upgrading, test your application to ensure the prompt injection vulnerability is remediated
- 5. Verify that your application still functions correctly with the new Langchain version
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation3.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,408.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-32786 — 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-2023-32786 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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