| Component | LangChain |
| Severity | critical (CVSS 10) |
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
| Published (NVD) | 2025-06-23 |
| Last modified | 2026-06-17 |
| Affected versions | langchain < 0.0.28 |
| Fixed in | 0.0.28 |
| Weakness | CWE-918 |
| CISA KEV | not listed |
NVD description
A Server-Side Request Forgery (SSRF) vulnerability exists in the RequestsToolkit component of the langchain-community package (specifically, langchain_community.agent_toolkits.openapi.toolkit.RequestsToolkit) in langchain-ai/langchain version 0.0.27. This vulnerability occurs because the toolkit does not enforce restrictions on requests to remote internet addresses, allowing it to also access local addresses. As a result, an attacker could exploit this flaw to perform port scans, access local services, retrieve instance metadata from cloud environments (e.g., Azure, AWS), and interact with servers on the local network. This issue has been fixed in version 0.0.28.
What to do
- Upgrade LangChain to
0.0.28or later. - Do not expose the component's API or UI to the internet without authentication in front of it.
Sources
- NVD: CVE-2025-2828
- https://github.com/langchain-ai/langchain/commit/e188d4ecb085d4561a0be3c583d26aa9c2c3283f
- https://huntr.com/bounties/8f771040-7f34-420a-b96b-5b93d4a99afc
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