CVE-2026-101100
ag-ui-protocol ag-ui Middleware filter-tool-calls.ts FilterToolCallsMiddleware cleanup
- State
- Published
- Severity
- 5.3 Medium
- Published
- Sep 28, 2026
- Updated
- Sep 28, 2026
- Reserved
- Sep 28, 2026
Description
A flaw has been found in ag-ui-protocol ag-ui up to 2026-09-07. This vulnerability affects the function FilterToolCallsMiddleware of the file sdks/typescript/packages/client/src/middleware/filter-tool-calls.ts of the component Middleware. Executing a manipulation can lead to incomplete cleanup. The attack may be launched remotely. Upgrading to version 2026-09-08 is able to resolve this issue. This patch is called c346119fe870b70f5c19738ee5119f3e1456e59d. It is suggested to upgrade the affected component.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.3 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X | VulDB |
| 3.1 | 5.4 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L/E:X/RL:O/RC:C | VulDB |
| 3.0 | 5.4 Medium | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L/E:X/RL:O/RC:C | VulDB |
| 2.0 | 5.5 Medium | AV:N/AC:L/Au:S/C:N/I:P/A:P/E:ND/RL:OF/RC:C | VulDB |
Weaknesses
- CWE-459 Incomplete Cleanup
Affected Products
| Product | Versions |
|---|---|
ag-uiag-ui-protocol |
|
References
- VDB-410975 | ag-ui-protocol ag-ui Middleware filter-tool-calls.ts FilterToolCallsMiddleware cleanupvdb-entrytechnical-description
- VDB-410975 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
- CVE-2026-101100 | CVE Analysis and Reportthird-party-advisory
- Submit #934980 | ag-ui-protocol ag-ui v1.0 CWE-459third-party-advisory
- https://github.com/ag-ui-protocol/ag-ui/issues/2443issue-tracking
- https://github.com/ag-ui-protocol/ag-ui/pull/2494issue-trackingpatch
- https://github.com/ag-ui-protocol/ag-ui/commit/c346119fe870b70f5c19738ee5119f3e1456e59dpatch
- https://github.com/ag-ui-protocol/ag-ui/releases/tag/release/2026-09-08patch
- https://github.com/ag-ui-protocol/ag-ui/product
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