{"id":"CVE-2026-9077","state":"PUBLISHED","title":"Reliance on Untrusted Inputs in a Security Decision vulnerabilities in Model Context Protocol features","description":"IBM Langflow OSS 1.0.0 through 1.10.3 Langflow allows remote authenticated attackers to bypass localhost-only restrictions and write arbitrary MCP server configurations to IDE configuration files on the host system.","publishedAt":"2026-08-05T16:24:43.123Z","updatedAt":"2026-08-05T18:11:44.684Z","severity":{"score":8.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:N","source":"ibm"},"assigner":"ibm","products":["IBM Langflow OSS"],"affected":[{"vendor":"IBM","product":"Langflow OSS","versions":[{"version":"1.0.0","status":"affected","lessThanOrEqual":"1.10.3","versionType":"semver"}],"cpes":["cpe:2.3:a:ibm:langflow_oss:1.0.0:*:*:*:*:*:*:*","cpe:2.3:a:ibm:langflow_oss:1.10.3:*:*:*:*:*:*:*"]}],"references":["https://www.ibm.com/support/pages/node/7282147"],"weaknesses":["CWE-807"],"ingestedAt":"2026-10-29T20:13:52.441Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/9xxx/CVE-2026-9077.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-9077","state":"PUBLISHED","datePublished":"2026-08-05T16:24:43.123Z","dateUpdated":"2026-08-05T18:11:44.684Z","assignerShortName":"ibm","assignerOrgId":"9a959283-ebb5-44b6-b705-dcc2bbced522","dateReserved":"2026-05-20T12:47:05.715Z"},"containers":{"cna":{"title":"Reliance on Untrusted Inputs in a Security Decision vulnerabilities in Model Context Protocol features","descriptions":[{"lang":"en","value":"IBM Langflow OSS 1.0.0 through 1.10.3 Langflow allows remote authenticated attackers to bypass localhost-only restrictions and write arbitrary MCP server configurations to IDE configuration files on the host system."}],"affected":[{"vendor":"IBM","product":"Langflow OSS","versions":[{"version":"1.0.0","status":"affected","lessThanOrEqual":"1.10.3","versionType":"semver"}],"cpes":["cpe:2.3:a:ibm:langflow_oss:1.0.0:*:*:*:*:*:*:*","cpe:2.3:a:ibm:langflow_oss:1.10.3:*:*:*:*:*:*:*"]}],"references":[{"url":"https://www.ibm.com/support/pages/node/7282147","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":"CHANGED","confidentialityImpact":"LOW","integrityImpact":"HIGH","availabilityImpact":"NONE","baseSeverity":"HIGH","baseScore":8.5,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:N"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-807","lang":"en","description":"CWE-807 Reliance on Untrusted Inputs in a Security Decision","type":"CWE"}]}],"providerMetadata":{"shortName":"ibm","orgId":"9a959283-ebb5-44b6-b705-dcc2bbced522","dateUpdated":"2026-08-05T16:24:43.123Z"},"solutions":[{"lang":"en","value":"IBM recommends upgrading to Langflow OSS 1.11.0 or newer  https://github.com/langflow-ai/langflow/releases","supportingMedia":[{"type":"text/html","base64":false,"value":"<p>IBM recommends upgrading to Langflow OSS 1.11.0 or newer <a href=\"https://github.com/langflow-ai/langflow/releases\" rel=\"nofollow\">https://github.com/langflow-ai/langflow/releases</a></p>"}]}],"credits":[{"lang":"en","value":"CVEs reported to IBM: CVE-2026-8446 by odgrso (GMO CyberSecurity by Ierae, Inc.); CVE-2026-17626 by Thai Son Dinh (VinSOC Labs, (R&amp;D).","type":"finder"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-05T18:11:36.844712Z","id":"CVE-2026-9077","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-05T18:11:44.684Z"}}]}}}