{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-18891","assignerOrgId":"9a959283-ebb5-44b6-b705-dcc2bbced522","state":"PUBLISHED","assignerShortName":"ibm","dateReserved":"2026-08-04T19:48:56.798Z","datePublished":"2026-08-28T20:51:27.834Z","dateUpdated":"2026-08-31T13:52:41.780Z"},"containers":{"cna":{"providerMetadata":{"orgId":"9a959283-ebb5-44b6-b705-dcc2bbced522","shortName":"ibm","dateUpdated":"2026-08-28T20:51:27.834Z"},"title":"Langflow is affected by multiple authentication bypass, path traversal, authorization, and server-side request forgery vulnerabilities","problemTypes":[{"descriptions":[{"lang":"en","cweId":"CWE-287","description":"CWE-287 Improper Authentication","type":"CWE"}]}],"affected":[{"vendor":"IBM","product":"Langflow OSS","versions":[{"status":"affected","version":"1.0.0","lessThanOrEqual":"1.11.1","versionType":"semver"}],"cpes":["cpe:2.3:a:ibm:langflow_oss:1.0.0:*:*:*:*:*:*:*","cpe:2.3:a:ibm:langflow_oss:1.11.1:*:*:*:*:*:*:*"]}],"descriptions":[{"lang":"en","value":"IBM Langflow OSS 1.0.0 through 1.11.1 could allow a remote attacker to execute arbitrary flows and access sensitive information due to improper authentication.","supportingMedia":[{"type":"text/html","base64":false,"value":"<p>IBM Langflow OSS 1.0.0 through 1.11.1 could allow a remote attacker to execute arbitrary flows and access sensitive information due to improper authentication.</p>"}]}],"references":[{"url":"https://www.ibm.com/support/pages/node/7284579","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":"LOW","availabilityImpact":"NONE","baseSeverity":"HIGH","baseScore":8.2,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N"}}],"solutions":[{"lang":"en","value":"IBM strongly recommends addressing the vulnerability now by upgrading  Langflow OSS to version 1.11.2 https://pypi.org/project/langflow/","supportingMedia":[{"type":"text/html","base64":false,"value":"<p>IBM strongly recommends addressing the vulnerability now by upgrading <a href=\"https://pypi.org/project/langflow/\" rel=\"nofollow\">Langflow OSS to version 1.11.2</a></p>"}]}]},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-31T13:52:35.677058Z","id":"CVE-2026-18891","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"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":"2026-08-31T13:52:41.780Z"}}]}}