CVE-2026-7846

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The project was informed of the problem early through an issue report but has not responded yet."}, {"lang": "es", "value": "Se ha encontrado una vulnerabilidad en chatchat-space Langchain-Chatchat hasta 0.3.1.3. Afectada es la funci\u00f3n files del archivo libs/chatchat-server/chatchat/server/api_server/openai_routes.py del componente OpenAI-Compatible File Upload API. Dicha manipulaci\u00f3n del argumento file.filename conduce a time-of-check time-of-use. Se requiere acceso a la red local para que este ataque tenga \u00e9xito. El ataque requiere un alto nivel de complejidad. La explotabilidad se considera dif\u00edcil. El exploit ha sido divulgado al p\u00fablico y puede ser utilizado. El proyecto fue informado del problema tempranamente a trav\u00e9s de un informe de incidencias, pero a\u00fan no ha respondido."}], "id": "CVE-2026-7846", "lastModified": "2026-07-24T08:10:00.150", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"accessComplexity": "HIGH", "accessVector": "ADJACENT_NETWORK", "authentication": "SINGLE", "availabilityImpact": "NONE", "baseScore": 1.4, "confidentialityImpact": "NONE", "integrityImpact": "PARTIAL", "vectorString": "AV:A/AC:H/Au:S/C:N/I:P/A:N", "version": "2.0"}, "exploitabilityScore": 2.5, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "cna@vuldb.com", "type": "Secondary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "NONE", "baseScore": 2.6, "baseSeverity": "LOW", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 1.2, "impactScore": 1.4, "source": "cna@vuldb.com", "type": "Secondary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "HIGH", "attackRequirements": "NONE", "attackVector": "ADJACENT", "availabilityRequirement": "NOT_DEFINED", "baseScore": 1.2, "baseSeverity": "LOW", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "PROOF_OF_CONCEPT", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:A/AC:H/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "cna@vuldb.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-7846", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-05-05T16:11:12.705106Z", "version": "2.0.3"}}]}, "published": "2026-05-05T16:16:19.577", "references": [{"source": "cna@vuldb.com", "url": "https://github.com/3em0/cve_repo/blob/main/Langchain-Chatchat/Vuln-2-Silent-File-Overwrite.md"}, {"source": "cna@vuldb.com", "url": "https://github.com/chatchat-space/Langchain-Chatchat/"}, {"source": "cna@vuldb.com", "url": "https://github.com/chatchat-space/Langchain-Chatchat/issues/5463"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/submit/807795"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/vuln/361125"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/vuln/361125/cti"}], "sourceIdentifier": "cna@vuldb.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-362"}, {"lang": "en", "value": "CWE-367"}], "source": "cna@vuldb.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "0.3.1.0"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "0.3.1.1"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "0.3.1.2"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "0.3.1.3"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Langchain-Chatchat", "source": "cna", "vendor": "chatchat-space"}, "product": "langchain-chatchat", "vendor": "chatchat-space"}], "created": "2026-05-05T17:45:06.153873+00:00", "updated": "2026-05-05T18:45:15.775408+00:00", "vendors": ["chatchat-space", "chatchat-space$PRODUCT$langchain-chatchat"]}