{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-75128","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","state":"PUBLISHED","assignerShortName":"VulnCheck","dateReserved":"2026-08-17T18:39:57.660Z","datePublished":"2026-10-20T00:46:08.977Z","dateUpdated":"2026-10-20T14:34:07.343Z"},"containers":{"cna":{"providerMetadata":{"orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","shortName":"VulnCheck","dateUpdated":"2026-10-20T00:46:08.977Z"},"datePublic":"2026-10-15T00:00:00.000Z","title":"Langchain-Chatchat through 0.3.1.3 Unauthenticated RCE via /tools/call Endpoint","descriptions":[{"lang":"en","value":"Langchain-Chatchat through 0.3.1.3 exposes a POST /tools/call API endpoint that invokes any registered tool by name without authentication, leaving the always-registered shell tool callable. Remote attackers can send a single request naming the shell tool to execute arbitrary OS commands as the server user (root in the shipped Docker image)."}],"problemTypes":[{"descriptions":[{"lang":"en","description":"Missing Authentication for Critical Function","cweId":"CWE-306","type":"CWE"}]}],"affected":[{"vendor":"chatchat-space","product":"Langchain-Chatchat","defaultStatus":"unaffected","versions":[{"version":"0","lessThanOrEqual":"0.3.1.3","status":"affected","versionType":"custom"}],"packageURL":"pkg:pypi/langchain-chatchat","collectionURL":"https://pypi.org","repo":"https://github.com/chatchat-space/Langchain-Chatchat"}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:chatchat-space:langchain-chatchat:*:*:*:*:*:*:*:*","versionEndIncluding":"0.3.1.3"}]}]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":9.3,"baseSeverity":"CRITICAL"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":9.8,"baseSeverity":"CRITICAL"}}],"references":[{"url":"https://www.lasso.security/vulnerability-database/cve-2026-75128","tags":["technical-description","exploit"],"name":"Lasso.security Advisory"},{"url":"https://github.com/chatchat-space/Langchain-Chatchat/blob/a6a9193b5002061719f0eee62c6310bd5b1b7f63/libs/chatchat-server/chatchat/server/api_server/tool_routes.py#L33","tags":["technical-description"]},{"name":"VulnCheck Advisory: Langchain-Chatchat through 0.3.1.3 Unauthenticated RCE via /tools/call Endpoint","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/langchain-chatchat-through-0.3.1.3-unauthenticated-rce-via-tools-call-endpoint"}],"credits":[{"lang":"en","value":"Noy Pearl","type":"finder"},{"lang":"en","value":"Michael Sromin","type":"finder"},{"lang":"en","value":"Ophir Dror","type":"finder"}],"x_generator":{"engine":"vulncheck-endgame"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-20T14:33:41.797170Z","id":"CVE-2026-75128","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-10-20T14:34:07.343Z"}}]}}