{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-6542", "assignerOrgId": "9a959283-ebb5-44b6-b705-dcc2bbced522", "state": "PUBLISHED", "assignerShortName": "ibm", "dateReserved": "2026-04-17T17:59:10.380Z", "datePublished": "2026-04-30T21:16:10.787Z", "dateUpdated": "2026-04-30T21:16:10.787Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "9a959283-ebb5-44b6-b705-dcc2bbced522", "shortName": "ibm", "dateUpdated": "2026-04-30T21:16:10.787Z"}, "title": "Monitor API allows cross-user read of transaction logs and deletion of build data via flow_id", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-639", "description": "CWE-639 Authorization Bypass Through User-Controlled Key", "type": "CWE"}]}], "affected": [{"vendor": "IBM", "product": "Langflow OSS", "versions": [{"status": "affected", "version": "1.0.0", "lessThanOrEqual": "1.8.4", "versionType": "semver"}], "cpes": ["cpe:2.3:a:ibm:langflow_oss:1.0.0:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:langflow_oss:1.8.4:*:*:*:*:*:*:*"]}], "descriptions": [{"lang": "en", "value": "IBM Langflow OSS 1.0.0 through 1.8.4 could allow any user to supply a flow_id to read transaction logs and vertex build data belonging to other users, and to delete persisted vertex build data for another user's flow.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>IBM Langflow OSS 1.0.0 through 1.8.4 could allow any user to supply a flow_id to read transaction logs and vertex build data belonging to other users, and to delete persisted vertex build data for another user's flow.</p>"}]}], "references": [{"url": "https://www.ibm.com/support/pages/node/7270886", "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"}}], "solutions": [{"lang": "en", "value": "IBM recommends addressing the vulnerability now by upgrading to Langflow OSS 1.9.0 or newer:\u00a0 https://github.com/langflow-ai/langflow", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>IBM recommends addressing the vulnerability now by upgrading to Langflow OSS 1.9.0 or newer:&nbsp;<a href=\"https://github.com/langflow-ai/langflow\" rel=\"nofollow\">https://github.com/langflow-ai/langflow</a></p>"}]}], "x_generator": {"engine": "ibm-cvegen"}}}}

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{"cveTags": [], "descriptions": [{"lang": "en", "value": "IBM Langflow OSS 1.0.0 through 1.8.4 could allow any user to supply a flow_id to read transaction logs and vertex build data belonging to other users, and to delete persisted vertex build data for another user's flow."}], "id": "CVE-2026-6542", "lastModified": "2026-04-30T22:16:26.340", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "psirt@us.ibm.com", "type": "Primary"}]}, "published": "2026-04-30T22:16:26.340", "references": [{"source": "psirt@us.ibm.com", "url": "https://www.ibm.com/support/pages/node/7270886"}], "sourceIdentifier": "psirt@us.ibm.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-639"}], "source": "psirt@us.ibm.com", "type": "Primary"}]}

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