Vulnerability · Published Sep 28, 2026 · Assigned by VulDB
CVE-2026-101101ag-ui-protocol ag-ui Middleware convert.ts JSON.parse uncaught exception
Medium 4.3
In plain English
A medium-severity security flaw in ag-ui from ag-ui-protocol. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 29% of all known vulnerabilities).
Official description
A vulnerability has been found in ag-ui-protocol ag-ui up to 2026-09-07. This issue affects the function JSON.parse of the file legacy/convert.ts of the component Middleware. The manipulation leads to uncaught exception. Remote exploitation of the attack is possible. Upgrading to version 2026-09-08 is capable of addressing this issue. The identifier of the patch is 30f8c794d5b73df5c610153043db502b2cc106cc. Upgrading the affected component is recommended.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| ag-ui-protocol | ag-ui | 2026-09-07 |
Weakness: CWE-248 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:X/RL:O/RC:C
References
- VDB-410976 | ag-ui-protocol ag-ui Middleware convert.ts JSON.parse uncaught exception vdb-entry, technical-description
- VDB-410976 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
- CVE-2026-101101 | CVE Analysis and Report third-party-advisory
- Submit #934981 | ag-ui-protocol ag-ui v1.0 CWE-248 third-party-advisory
- https://github.com/ag-ui-protocol/ag-ui/issues/2444 issue-tracking
- https://github.com/ag-ui-protocol/ag-ui/pull/2493 issue-tracking, patch
- https://github.com/ag-ui-protocol/ag-ui/commit/30f8c794d5b73df5c610153043db502b2cc106cc patch
- https://github.com/ag-ui-protocol/ag-ui/releases/tag/release/2026-09-08 patch
- https://github.com/ag-ui-protocol/ag-ui/ product