{"id":"CVE-2026-7869","state":"PUBLISHED","title":"Langflow OSS is affected by arbitrary code execution in custom component validation and trusted code enforcement","description":"IBM Langflow OSS 1.0.0 through 1.10.3 is vulnerable to Path Traversal in the Knowledge Bases API (`POST /api/v1/knowledge_bases`). This occurs because user-supplied knowledge base names are used directly to create file paths without proper sanitization or containment checks. An authenticated attacker can exploit this flaw to create directories and write files anywhere on the server's filesystem.","publishedAt":"2026-08-05T18:13:15.979Z","updatedAt":"2026-08-06T14:34:10.635Z","severity":{"score":5.4,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","source":"ibm"},"assigner":"ibm","products":["IBM Langflow OSS"],"affected":[{"vendor":"IBM","product":"Langflow OSS","versions":[{"version":"1.0.0","status":"affected","lessThanOrEqual":"1.10.3","versionType":"semver"}],"cpes":["cpe:2.3:a:ibm:langflow_oss:1.0.0:*:*:*:*:*:*:*","cpe:2.3:a:ibm:langflow_oss:1.10.3:*:*:*:*:*:*:*"]}],"references":["https://www.ibm.com/support/pages/node/7282647"],"weaknesses":["CWE-22"],"ingestedAt":"2026-10-29T20:13:07.220Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/7xxx/CVE-2026-7869.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-7869","state":"PUBLISHED","datePublished":"2026-08-05T18:13:15.979Z","dateUpdated":"2026-08-06T14:34:10.635Z","assignerShortName":"ibm","assignerOrgId":"9a959283-ebb5-44b6-b705-dcc2bbced522","dateReserved":"2026-05-05T14:06:14.250Z"},"containers":{"cna":{"title":"Langflow OSS is affected by arbitrary code execution in custom component validation and trusted code enforcement","descriptions":[{"lang":"en","value":"IBM Langflow OSS 1.0.0 through 1.10.3 is vulnerable to Path Traversal in the Knowledge Bases API (`POST /api/v1/knowledge_bases`). This occurs because user-supplied knowledge base names are used directly to create file paths without proper sanitization or containment checks. An authenticated attacker can exploit this flaw to create directories and write files anywhere on the server's filesystem."}],"affected":[{"vendor":"IBM","product":"Langflow OSS","versions":[{"version":"1.0.0","status":"affected","lessThanOrEqual":"1.10.3","versionType":"semver"}],"cpes":["cpe:2.3:a:ibm:langflow_oss:1.0.0:*:*:*:*:*:*:*","cpe:2.3:a:ibm:langflow_oss:1.10.3:*:*:*:*:*:*:*"]}],"references":[{"url":"https://www.ibm.com/support/pages/node/7282647","tags":["vendor-advisory","patch"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE","baseSeverity":"MEDIUM","baseScore":5.4,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-22","lang":"en","description":"CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","type":"CWE"}]}],"providerMetadata":{"shortName":"ibm","orgId":"9a959283-ebb5-44b6-b705-dcc2bbced522","dateUpdated":"2026-08-05T18:13:15.979Z"},"solutions":[{"lang":"en","value":"IBM recommends upgrading to Langflow OSS 1.11.0 or newer  https://github.com/langflow-ai/langflow/releases","supportingMedia":[{"type":"text/html","base64":false,"value":"<p>IBM recommends upgrading to Langflow OSS 1.11.0 or newer <a href=\"https://github.com/langflow-ai/langflow/releases\" rel=\"nofollow\">https://github.com/langflow-ai/langflow/releases</a></p>"}]}],"credits":[{"lang":"en","value":"Sergio Cabrera (ddlxstudio) https://github.com/nekros1xx","type":"finder"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-06T14:33:59.130664Z","id":"CVE-2026-7869","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-06T14:34:10.635Z"}}]}}}