{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-4502","assignerOrgId":"9a959283-ebb5-44b6-b705-dcc2bbced522","state":"PUBLISHED","assignerShortName":"ibm","dateReserved":"2026-03-20T13:47:59.369Z","datePublished":"2026-04-30T20:57:08.130Z","dateUpdated":"2026-06-12T20:28:41.538Z"},"containers":{"cna":{"providerMetadata":{"orgId":"9a959283-ebb5-44b6-b705-dcc2bbced522","shortName":"ibm","dateUpdated":"2026-06-12T20:28:41.538Z"},"title":"Arbitrary File Write and Remote Code Execution Vulnerability in Langflow v2 API","problemTypes":[{"descriptions":[{"lang":"en","cweId":"CWE-22","description":"CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","type":"CWE"}]}],"affected":[{"vendor":"IBM","product":"Langflow Desktop","versions":[{"status":"affected","version":"1.2.0","lessThanOrEqual":"1.8.4","versionType":"semver"}],"defaultStatus":"unaffected","cpes":["cpe:2.3:a:ibm:langflow_desktop:1.2.0:*:*:*:*:*:*:*","cpe:2.3:a:ibm:langflow_desktop:1.8.4:*:*:*:*:*:*:*"]}],"descriptions":[{"lang":"en","value":"IBM Langflow Desktop 1.2.0 through 1.8.4 Langflow could allow an authenticated attacker to traverse directories on the system. An attacker could send a specially crafted URL request containing \"dot dot\" sequences (/../) to write arbitrary files on the system.","supportingMedia":[{"type":"text/html","base64":false,"value":"<p>IBM Langflow Desktop 1.2.0 through 1.8.4 Langflow could allow an authenticated attacker to traverse directories on the system. An attacker could send&nbsp;a specially crafted URL request containing \"dot dot\" sequences (/../) to write arbitrary files on the system.</p>"}]}],"references":[{"url":"https://www.ibm.com/support/pages/node/7271097","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":"NONE","integrityImpact":"HIGH","availabilityImpact":"NONE","baseSeverity":"MEDIUM","baseScore":6.5,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N"}}],"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-1-9-desktop \nIf you are already using Langflow Desktop, upgrade in the application to version 1.9.0\nTo install Langflow Desktop for the first time, visit   Langflow Desktop https://langflow.org/desktop . Download 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-1-9-desktop\" rel=\"nofollow\">https://www.langflow.org/blog/langflow-1-9-desktop</a><br>If you are already using Langflow Desktop, upgrade in the application to version 1.9.0<br>To install Langflow Desktop for the first time, visit <a href=\"https://langflow.org/desktop\" rel=\"nofollow\">&nbsp;Langflow Desktop</a>.<a href=\"https://langflow.org/desktop\" rel=\"nofollow\">Download</a></p>"}]}],"credits":[{"lang":"en","value":"The vulnerability was reported to IBM by Akshat Sinha, Senior SRE Rubrik (https://www.linkedin.com/in/akshat-sinha-568765167).","type":"reporter"}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"ibm-cvegen"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-01T14:57:03.183036Z","id":"CVE-2026-4502","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-05-01T14:58:10.215Z"}}]}}