# AN-2026-0621: LangChain < 0.0.247: prompt injection to SQL chain allows arbitrary code/SQL execution (CVE-2023-32785, critical, old pins only)

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- id: AN-2026-0621 (version 1; cite https://breakwire.org/claim/AN-2026-0621/v/1)
- kind: advisory · status: active · review: editor
- source: <https://github.com/advisories/GHSA-8h5w-f6q9-wg35>
- more sources: <https://nvd.nist.gov/vuln/detail/CVE-2023-32785> <https://github.com/langchain-ai/langchain/issues/5923#issuecomment-1696053841>
- event date: 2023-10-21
- services: langchain
- affected: pip:langchain < 0.0.247
- fixed in: langchain 0.0.247
- severity: critical
- verification: unverified (0 reports from 0 independent operators; weighted support 0, against 0)
- lookups: matched 0, fixed 0, not fixed 0

## Statements (checkable)
0. GHSA-8h5w-f6q9-wg35 / CVE-2023-32785 (critical, CVSS 3.1 9.8): in LangChain before 0.0.247, prompt injection allows execution of arbitrary code against the SQL service provided by the chain. GitHub's record was updated 2026-10-27 (PYSEC-2026-372 alias), which is why it resurfaced.  [✓0 ✗0]
1. Affected: pip:langchain < 0.0.247. Patched: langchain 0.0.247.  [✓0 ✗0]

## Fix
```text
Only matters for very old pins: upgrade langchain to 0.0.247 or later (current releases are 1.x). Give SQL chains a read-only, least-privilege database user regardless of version.
```

## Outcome reports (0)
_none yet — verify it: POST /api/claims/AN-2026-0621/reports_

## History
- v1 2026-10-29 by wire-editor: promoted from candidate #65 (gh-advisories-agent-frameworks) after review