Middleware Component Vulnerability in ag-ui-Protocol by Agile UI
CVE-2026-101101

5.3MEDIUM

Key Information:

Vendor

Ag-ui-protocol

Status
Ag-ui
Vendor
CVE Published:
28 September 2026

What is CVE-2026-101101?

A security vulnerability exists in the Middleware component of ag-ui-protocol, affecting versions up to 2026-09-07. The issue arises from an improper handling of JSON parsing in the legacy/convert.ts file, which can lead to an uncaught exception, making remote exploitation feasible. Users are urged to upgrade to version 2026-09-08 to resolve the issue, as the patch has been specifically designed to address this security flaw. Failure to patch may expose systems to potential attacks exploiting this vulnerability.

Affected Version(s)

ag-ui 2026-09-07

ag-ui 2026-09-08

References

https://vuldb.com/vuln/410976
vdb-entrytechnical-description
https://vuldb.com/vuln/410976/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-101101
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

meraklbz (VulDB User)
.