{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-8505", "assignerOrgId": "9a959283-ebb5-44b6-b705-dcc2bbced522", "state": "PUBLISHED", "assignerShortName": "ibm", "dateReserved": "2026-05-13T22:04:50.617Z", "datePublished": "2026-07-17T19:06:00.986Z", "dateUpdated": "2026-07-23T03:56:06.902Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "9a959283-ebb5-44b6-b705-dcc2bbced522", "shortName": "ibm", "dateUpdated": "2026-07-17T19:06:00.986Z" }, "title": "Authentication Bypass in Webhook Endpoints Allowed Unauthorized Flow Execution", "affected": [ { "vendor": "IBM", "product": "Langflow OSS", "versions": [ { "status": "affected", "version": "1.0.0", "lessThanOrEqual": "1.10.0", "versionType": "semver" } ], "cpes": [ "cpe:2.3:a:ibm:langflow_oss:1.0.0:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:langflow_oss:1.10.0:*:*:*:*:*:*:*" ] } ], "descriptions": [ { "lang": "en", "value": "IBM Langflow OSS 1.0.0 through 1.10.0 has a vulnerability in Langflow's webhook authentication logic allows unauthenticated users to trigger the execution of any flow. The system incorrectly bypasses API key validation when the WEBHOOK_AUTH_ENABLE configuration is set to False (which is the default setting). This allows a remote attacker who knows a flow's UUID to execute it as if they were the owner, potentially leading to Remote Code Execution (RCE).", "supportingMedia": [ { "type": "text/html", "base64": false, "value": "
IBM Langflow OSS 1.0.0 through 1.10.0 has a vulnerability in Langflow's webhook authentication logic allows unauthenticated users to trigger the execution of any flow. The system incorrectly bypasses API key validation when the WEBHOOK_AUTH_ENABLE configuration is set to False (which is the default setting). This allows a remote attacker who knows a flow's UUID to execute it as if they were the owner, potentially leading to Remote Code Execution (RCE).
" } ] } ], "references": [ { "url": "https://www.ibm.com/support/pages/node/7278921", "tags": [ "vendor-advisory", "patch" ] } ], "metrics": [ { "format": "CVSS", "scenarios": [ { "lang": "en", "value": "GENERAL" } ], "cvssV3_1": { "version": "3.1", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "baseSeverity": "CRITICAL", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H" } } ], "solutions": [ { "lang": "en", "value": "IBM strongly recommends addressing the vulnerability now by upgrading Langflow OSS to version 1.10.1 https://pypi.org/project/langflow/", "supportingMedia": [ { "type": "text/html", "base64": false, "value": "IBM strongly recommends addressing the vulnerability now by upgrading Langflow OSS to version 1.10.1
" } ] } ], "credits": [ { "lang": "en", "value": "Edward-x (YLChen-007)", "type": "finder" } ], "x_generator": { "engine": "ibm-cvegen" } }, "adp": [ { "problemTypes": [ { "descriptions": [ { "type": "CWE", "cweId": "CWE-306", "lang": "en", "description": "CWE-306 Missing Authentication for Critical Function" } ] } ], "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-07-22T00:00:00+00:00", "options": [ { "Exploitation": "none" }, { "Automatable": "yes" }, { "Technical Impact": "total" } ], "role": "CISA Coordinator", "version": "2.0.3", "id": "CVE-2026-8505" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-07-23T03:56:06.902Z" } } ] } }