Severity by source
AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Primary rating from NVD.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Lifecycle Timeline
5Blast Radius
ecosystem impact- 7 pypi packages depend on langchain-community (7 direct, 0 indirect)
Ecosystem-wide dependent count for version 0.0.28.
DescriptionCVE.org
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.
AnalysisAI
A remote code execution vulnerability in langchain-ai/langchain (CVSS 10.0). Risk factors: public PoC available. Vendor patch is available.
Technical ContextAI
CWE-918 (Server-Side Request Forgery). CVSS 10.0 indicates critical severity with likely remote exploitation vector. Affects langchain-ai/langchain.
RemediationAI
Apply the vendor-supplied patch immediately.
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Same weakness CWE-918 – Server-Side Request Forgery (SSRF)
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External POC / Exploit Code
Leaving vuln.today
EUVD-2025-18953
GHSA-h5gc-rm8j-5gpr