{"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": "2026-04-30T20:57:08.130Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "9a959283-ebb5-44b6-b705-dcc2bbced522", "shortName": "ibm", "dateUpdated": "2026-04-30T20:57:08.130Z"}, "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"}], "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\u00a0a 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-desktopIf you are already using Langflow Desktop, upgrade in the application to version 1.9.0To install Langflow Desktop for the first time, visit \u00a0Langflow Desktop.Download", "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>"}]}], "x_generator": {"engine": "ibm-cvegen"}}}}

{}

{"cveTags": [], "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\u00a0a specially crafted URL request containing \"dot dot\" sequences (/../) to write arbitrary files on the system."}], "id": "CVE-2026-4502", "lastModified": "2026-04-30T21:16:33.533", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "psirt@us.ibm.com", "type": "Primary"}]}, "published": "2026-04-30T21:16:33.533", "references": [{"source": "psirt@us.ibm.com", "url": "https://www.ibm.com/support/pages/node/7271097"}], "sourceIdentifier": "psirt@us.ibm.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-22"}], "source": "psirt@us.ibm.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[1.2.0,1.8.4]"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Langflow Desktop", "source": "cna", "vendor": "IBM"}, "product": "langflow_desktop", "vendor": "ibm"}], "created": "2026-04-30T22:30:02.674577+00:00", "updated": "2026-04-30T22:30:02.674623+00:00", "vendors": ["ibm", "ibm$PRODUCT$langflow_desktop"]}