{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-34070", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-03-25T16:21:40.867Z", "datePublished": "2026-03-31T02:01:49.320Z", "dateUpdated": "2026-03-31T18:04:59.283Z"}, "containers": {"cna": {"title": "LangChain Core has Path Traversal vulnerabilites in legacy `load_prompt` functions", "problemTypes": [{"descriptions": [{"cweId": "CWE-22", "lang": "en", "description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/langchain-ai/langchain/security/advisories/GHSA-qh6h-p6c9-ff54", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/langchain-ai/langchain/security/advisories/GHSA-qh6h-p6c9-ff54"}, {"name": "https://github.com/langchain-ai/langchain/commit/27add913474e01e33bededf4096151130ba0d47c", "tags": ["x_refsource_MISC"], "url": "https://github.com/langchain-ai/langchain/commit/27add913474e01e33bededf4096151130ba0d47c"}, {"name": "https://github.com/langchain-ai/langchain/releases/tag/langchain-core==1.2.22", "tags": ["x_refsource_MISC"], "url": "https://github.com/langchain-ai/langchain/releases/tag/langchain-core==1.2.22"}], "affected": [{"vendor": "langchain-ai", "product": "langchain", "versions": [{"version": "< 1.2.22", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-03-31T02:01:49.320Z"}, "descriptions": [{"lang": "en", "value": "LangChain is a framework for building agents and LLM-powered applications. Prior to version 1.2.22, multiple functions in langchain_core.prompts.loading read files from paths embedded in deserialized config dicts without validating against directory traversal or absolute path injection. When an application passes user-influenced prompt configurations to load_prompt() or load_prompt_from_config(), an attacker can read arbitrary files on the host filesystem, constrained only by file-extension checks (.txt for templates, .json/.yaml for examples). This issue has been patched in version 1.2.22."}], "source": {"advisory": "GHSA-qh6h-p6c9-ff54", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/langchain-ai/langchain/security/advisories/GHSA-qh6h-p6c9-ff54", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-03-31T15:17:33.597003Z", "id": "CVE-2026-34070", "options": [{"Exploitation": "poc"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-03-31T18:04:59.283Z"}}]}}

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