{"id":"CVE-2026-92359","state":"PUBLISHED","title":"ag-ui-protocol ag-ui CORSMiddleware utils.py create_strands_app cross-domain policy","description":"A security flaw has been discovered in ag-ui-protocol ag-ui 0.3.0. The affected element is the function create_strands_app of the file integrations/aws-strands/python/src/ag_ui_strands/utils.py of the component CORSMiddleware. The manipulation results in permissive cross-domain policy with untrusted domains. The attack may be launched remotely. The attack requires a high level of complexity. The exploitability is described as difficult. Upgrading to version AGUI.Abstractions@0.0.6 is sufficient to fix this issue. The patch is identified as 9b143b9668fa52c2054ede9d34a45ac4b4401089. It is suggested to upgrade the affected component.","publishedAt":"2026-09-16T12:00:16.220Z","updatedAt":"2026-09-16T13:15:16.227Z","severity":{"score":2.3,"label":"Low","version":"4.0","vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X","source":"VulDB"},"assigner":"VulDB","products":["ag-ui-protocol ag-ui"],"affected":[{"vendor":"ag-ui-protocol","product":"ag-ui","versions":[{"version":"0.3.0","status":"affected"},{"version":"AGUI.Abstractions@0.0.6","status":"unaffected"}],"cpes":["cpe:2.3:a:ag-ui-protocol:ag-ui:*:*:*:*:*:*:*:*"],"modules":["CORSMiddleware"]}],"references":["https://vuldb.com/vuln/405445","https://vuldb.com/vuln/405445/cti","https://vuldb.com/cve/CVE-2026-92359","https://vuldb.com/submit/934120","https://github.com/ag-ui-protocol/ag-ui/issues/2433","https://github.com/ag-ui-protocol/ag-ui/pull/2492","https://github.com/ag-ui-protocol/ag-ui/commit/9b143b9668fa52c2054ede9d34a45ac4b4401089","https://github.com/ag-ui-protocol/ag-ui/releases/tag/AGUI.Abstractions%400.0.6","https://github.com/ag-ui-protocol/ag-ui/"],"weaknesses":["CWE-942","CWE-346"],"ingestedAt":"2026-10-29T20:13:34.582Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/92xxx/CVE-2026-92359.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-92359","state":"PUBLISHED","datePublished":"2026-09-16T12:00:16.220Z","dateUpdated":"2026-09-16T13:15:16.227Z","assignerShortName":"VulDB","assignerOrgId":"1af790b2-7ee1-4545-860a-a788eba489b5","dateReserved":"2026-09-16T05:36:01.573Z"},"containers":{"cna":{"title":"ag-ui-protocol ag-ui CORSMiddleware utils.py create_strands_app cross-domain policy","descriptions":[{"lang":"en","value":"A security flaw has been discovered in ag-ui-protocol ag-ui 0.3.0. The affected element is the function create_strands_app of the file integrations/aws-strands/python/src/ag_ui_strands/utils.py of the component CORSMiddleware. The manipulation results in permissive cross-domain policy with untrusted domains. The attack may be launched remotely. The attack requires a high level of complexity. The exploitability is described as difficult. Upgrading to version AGUI.Abstractions@0.0.6 is sufficient to fix this issue. The patch is identified as 9b143b9668fa52c2054ede9d34a45ac4b4401089. It is suggested to upgrade the affected component."}],"affected":[{"vendor":"ag-ui-protocol","product":"ag-ui","versions":[{"version":"0.3.0","status":"affected"},{"version":"AGUI.Abstractions@0.0.6","status":"unaffected"}],"cpes":["cpe:2.3:a:ag-ui-protocol:ag-ui:*:*:*:*:*:*:*:*"],"modules":["CORSMiddleware"]}],"references":[{"url":"https://vuldb.com/vuln/405445","name":"VDB-405445 | ag-ui-protocol ag-ui CORSMiddleware utils.py create_strands_app cross-domain policy","tags":["vdb-entry","technical-description"]},{"url":"https://vuldb.com/vuln/405445/cti","name":"VDB-405445 | CTI Indicators (IOB, IOC, IOA)","tags":["signature","permissions-required"]},{"url":"https://vuldb.com/cve/CVE-2026-92359","name":"CVE-2026-92359 | CVE Analysis and Report","tags":["third-party-advisory"]},{"url":"https://vuldb.com/submit/934120","name":"Submit #934120 | ag-ui-protocol  ag-ui 0.3.0 CWE-942","tags":["third-party-advisory"]},{"url":"https://github.com/ag-ui-protocol/ag-ui/issues/2433","tags":["issue-tracking"]},{"url":"https://github.com/ag-ui-protocol/ag-ui/pull/2492","tags":["issue-tracking","patch"]},{"url":"https://github.com/ag-ui-protocol/ag-ui/commit/9b143b9668fa52c2054ede9d34a45ac4b4401089","tags":["patch"]},{"url":"https://github.com/ag-ui-protocol/ag-ui/releases/tag/AGUI.Abstractions%400.0.6","tags":["patch"]},{"url":"https://github.com/ag-ui-protocol/ag-ui/","tags":["product"]}],"metrics":[{"cvssV4_0":{"version":"4.0","baseScore":2.3,"vectorString":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X","baseSeverity":"LOW"}},{"cvssV3_1":{"version":"3.1","baseScore":3.1,"vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N/E:X/RL:O/RC:C","baseSeverity":"LOW"}},{"cvssV3_0":{"version":"3.0","baseScore":3.1,"vectorString":"CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N/E:X/RL:O/RC:C","baseSeverity":"LOW"}},{"cvssV2_0":{"version":"2.0","baseScore":2.6,"vectorString":"AV:N/AC:H/Au:N/C:P/I:N/A:N/E:ND/RL:OF/RC:C"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-942","type":"CWE","lang":"en","description":"Permissive Cross-domain Policy with Untrusted Domains"}]},{"descriptions":[{"cweId":"CWE-346","type":"CWE","lang":"en","description":"Origin Validation Error"}]}],"providerMetadata":{"shortName":"VulDB","orgId":"1af790b2-7ee1-4545-860a-a788eba489b5","dateUpdated":"2026-09-16T12:00:16.220Z"},"timeline":[{"time":"2026-09-16T00:00:00.000Z","lang":"en","value":"Advisory disclosed"},{"time":"2026-09-16T02:00:00.000Z","lang":"en","value":"VulDB entry created"},{"time":"2026-09-16T07:41:24.000Z","lang":"en","value":"VulDB entry last update"}],"credits":[{"lang":"en","value":"colorfullbz (VulDB User)","type":"reporter"}],"tags":["x_open-source"],"x_generator":["VulDB PVTS v202609"]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-16T13:15:05.598960Z","id":"CVE-2026-92359","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":"2026-09-16T13:15:16.227Z"}}]}}}