CVE-2026-92360

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Source
https://cve.org/CVERecord?id=CVE-2026-92360
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-92360.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-92360
Published
2026-09-16T12:30:09Z
Modified
2026-09-18T03:48:41Z
Severity
  • 5.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X CVSS Calculator
Summary
ag-ui-protocol ag-ui Event Application Layer agent.ts prepareRunAgentInput origin validation
Details

A weakness has been identified in ag-ui-protocol ag-ui 1.0. The impacted element is the function prepareRunAgentInput of the file agent/agent.ts of the component Event Application Layer. This manipulation of the argument TEXT_MESSAGE_START causes origin validation error. Remote exploitation of the attack is possible. The pull request to fix this issue awaits acceptance.

Database specific 
{
    "cna_assigner": "VulDB",
    "cwe_ids": [
        "CWE-345",
        "CWE-346"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/92xxx/CVE-2026-92360.json"
}
References

Affected packages

Git / github.com/ag-ui-protocol/ag-ui

Affected ranges

Type
GIT
Repo
https://github.com/ag-ui-protocol/ag-ui
Events
Introduced
fd34acb6be63a67ed9dbbc7f2f59f7c6f8c01247
Last Affected
fd34acb6be63a67ed9dbbc7f2f59f7c6f8c01247
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "1.0"
        },
        {
            "last_affected": "1.0"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Affected versions

1.*
1.0
@ag-ui/claude-agent-sdk@0.*
@ag-ui/claude-agent-sdk@0.0.3
@ag-ui/langchain@0.*
@ag-ui/langchain@0.0.2
@ag-ui/langgraph@0.*
@ag-ui/langgraph@0.0.33
@ag-ui/mastra@1.*
@ag-ui/mastra@1.0.3

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-92360.json"