| Component | LangChain |
| Severity | critical (CVSS 9.8) |
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| Published (NVD) | 2024-10-29 |
| Last modified | 2026-06-17 |
| Affected versions | langchain = 0.2.5 |
| Fixed in | see the vendor advisory |
| Weakness | CWE-89CWE-74 |
| CISA KEV | not listed |
NVD description
A vulnerability in the GraphCypherQAChain class of langchain-ai/langchain version 0.2.5 allows for SQL injection through prompt injection. This vulnerability can lead to unauthorized data manipulation, data exfiltration, denial of service (DoS) by deleting all data, breaches in multi-tenant security environments, and data integrity issues. Attackers can create, update, or delete nodes and relationships without proper authorization, extract sensitive data, disrupt services, access data across different tenants, and compromise the integrity of the database.
What to do
- NVD lists no fixed version yet: follow the vendor advisory below and keep LangChain off the public internet until a fix ships.
- Do not expose the component's API or UI to the internet without authentication in front of it.
Sources
- NVD: CVE-2024-8309
- https://github.com/langchain-ai/langchain/commit/c2a3021bb0c5f54649d380b42a0684ca5778c255
- https://huntr.com/bounties/8f4ad910-7fdc-4089-8f0a-b5df5f32e7c5
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