{"id":"CVE-2026-3345","state":"PUBLISHED","title":"Path Traversal and Arbitrary File Write Vulnerability in IBM Langflow Desktop API v2 File Upload Endpoint","description":"IBM Langflow Desktop <=1.8.4 Langflow could allow a remote attacker to traverse directories on the system. An attacker could send a specially crafted URL request containing \"dot dot\" sequences (/../) to view arbitrary files on the system.","publishedAt":"2026-04-30T21:11:20.614Z","updatedAt":"2026-05-27T12:23:58.817Z","severity":{"score":6.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","source":"ibm"},"assigner":"ibm","products":["IBM Langflow Desktop"],"affected":[{"vendor":"IBM","product":"Langflow Desktop","versions":[{"version":"0","status":"affected","lessThanOrEqual":"1.8.4","versionType":"semver"}],"cpes":["cpe:2.3:a:ibm:langflow_desktop:1.8.4:*:*:*:*:*:*:*"]}],"references":["https://www.ibm.com/support/pages/node/7271094"],"weaknesses":["CWE-22"],"ingestedAt":"2026-10-29T20:11:50.837Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/3xxx/CVE-2026-3345.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-3345","state":"PUBLISHED","datePublished":"2026-04-30T21:11:20.614Z","dateUpdated":"2026-05-27T12:23:58.817Z","assignerShortName":"ibm","assignerOrgId":"9a959283-ebb5-44b6-b705-dcc2bbced522","dateReserved":"2026-02-27T16:01:04.253Z"},"containers":{"cna":{"title":"Path Traversal and Arbitrary File Write Vulnerability in IBM Langflow Desktop API v2 File Upload Endpoint","descriptions":[{"lang":"en","value":"IBM Langflow Desktop <=1.8.4 Langflow could allow a remote attacker to traverse directories on the system. An attacker could send a specially crafted URL request containing \"dot dot\" sequences (/../) to view arbitrary files on the system."}],"affected":[{"vendor":"IBM","product":"Langflow Desktop","versions":[{"version":"0","status":"affected","lessThanOrEqual":"1.8.4","versionType":"semver"}],"cpes":["cpe:2.3:a:ibm:langflow_desktop:1.8.4:*:*:*:*:*:*:*"]}],"references":[{"url":"https://www.ibm.com/support/pages/node/7271094","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":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE","baseSeverity":"MEDIUM","baseScore":6.5,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/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":"2026-05-27T12:23:58.817Z"},"solutions":[{"lang":"en","value":"IBM recommends addressing the vulnerability now by upgrading to IBM Langflow Desktop 1.9.0 or newer  https://www.langflow.org/blog/langflow-1-8-desktop \n\n\n\nIf you are already using Langflow Desktop, upgrade in the application to version 1.9.0\n\n\n\nTo install Langflow Desktop for the first time, visit  Download Langflow Desktop https://langflow.org/desktop .","supportingMedia":[{"type":"text/html","base64":false,"value":"<p>IBM recommends addressing the vulnerability now by upgrading to IBM Langflow Desktop 1.9.0 or newer <a href=\"https://www.langflow.org/blog/langflow-1-8-desktop\" rel=\"nofollow\">https://www.langflow.org/blog/langflow-1-8-desktop</a></p><p>If you are already using Langflow Desktop, upgrade in the application to version 1.9.0</p><p>To install Langflow Desktop for the first time, visit <a href=\"https://langflow.org/desktop\" rel=\"nofollow\">Download Langflow Desktop</a>.</p>"}]}],"x_generator":{"engine":"ibm-cvegen"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-01T16:07:34.997223Z","id":"CVE-2026-3345","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":"2026-05-01T16:38:05.399Z"}}]}}}