{"data":{"id":"2597dcf8-0766-446a-9769-cecca91f163e","title":"CVE-2026-51883: The knowledge base creation and document upload interfaces in Langchain-Chatchat 0.3.0;0.3.1 is vulnerable to path…","summary":"CVE-2026-51883 affects the knowledge base creation and document upload interfaces in Langchain-Chatchat 0.3.0 and 0.3.1. An attacker can inject path traversal sequences such as `..\\` into the `knowledge_base_name` parameter, writing knowledge base content to arbitrary locations outside the configured knowledge base root directory.","solution":"N/A -- no mitigation discussed in source.","labels":["security"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-51883","publishedAt":"2026-10-01T22:17:03.127Z","cveId":"CVE-2026-51883","cweIds":null,"cvssScore":null,"cvssSeverity":null,"severity":"high","attackType":["other"],"issueType":"vulnerability","affectedPackages":null,"affectedPackageNames":null,"affectedVendors":[],"affectedVendorsRaw":["Langchain-Chatchat"],"classifierModel":"claude-haiku-5-5","classifierPromptVersion":"v4","summaryPromptVersion":"v2","headline":"Langchain-Chatchat path traversal in knowledge_base_name","headlinePromptVersion":"h1","cvssVector":null,"attackVector":null,"attackComplexity":null,"privilegesRequired":null,"userInteraction":null,"exploitMaturity":"unknown","epssScore":0.00349,"epssCheckedAt":"2026-10-10T03:00:38.957Z","kevDateAdded":null,"advisoryAliases":["GHSA-c4wm-cr62-pcg5"],"affectedPackagesSource":null,"affectedPackagesCheckedAt":"2026-10-10T03:43:04.260Z","patchAvailable":null,"disclosureDate":"2026-10-01T22:17:03.127Z","capecIds":null,"crossRefCount":0,"attackSophistication":"trivial","impactType":["integrity"],"aiComponentTargeted":"rag","llmSpecific":true,"classifierConfidence":0.85,"researchCategory":null,"atlasIds":["AML.T0010"]}}