CVE-2026-101100: Incomplete Cleanup in ag-ui-protocol ag-ui
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.
AI Analysis
Technical Summary
This vulnerability exists in the FilterToolCallsMiddleware function of the ag-ui-protocol ag-ui component, in the file sdks/typescript/packages/client/src/middleware/filter-tool-calls.ts. An attacker can remotely manipulate the system to cause incomplete cleanup, potentially leading to residual state or resource issues. The vulnerability is fixed in version 2026-09-08 with patch c346119fe870b70f5c19738ee5119f3e1456e59d.
Potential Impact
The vulnerability allows remote attackers to cause incomplete cleanup within the middleware component, which may lead to resource leakage or inconsistent state. The CVSS 4.0 score is 5.3 (medium), indicating a moderate impact with no privileges required and no user interaction needed.
Mitigation Recommendations
Upgrade the ag-ui-protocol ag-ui component to version 2026-09-08 or later, which contains the official fix for this vulnerability. No other mitigations are indicated by the vendor advisory.
CVE-2026-101100: Incomplete Cleanup in ag-ui-protocol ag-ui
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.
CVSS v4.0
Score 5.3medium
Affected software
ag-ui-protocol
ag-ui
pkg:github/ag-ui-protocol/ag-uicpe:2.3:a:ag-ui-protocol:ag-ui:*:*:*:*:*:*:*:*Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability exists in the FilterToolCallsMiddleware function of the ag-ui-protocol ag-ui component, in the file sdks/typescript/packages/client/src/middleware/filter-tool-calls.ts. An attacker can remotely manipulate the system to cause incomplete cleanup, potentially leading to residual state or resource issues. The vulnerability is fixed in version 2026-09-08 with patch c346119fe870b70f5c19738ee5119f3e1456e59d.
Potential Impact
The vulnerability allows remote attackers to cause incomplete cleanup within the middleware component, which may lead to resource leakage or inconsistent state. The CVSS 4.0 score is 5.3 (medium), indicating a moderate impact with no privileges required and no user interaction needed.
Mitigation Recommendations
Upgrade the ag-ui-protocol ag-ui component to version 2026-09-08 or later, which contains the official fix for this vulnerability. No other mitigations are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-09-28T02:53:37.761Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6abaa866f7a7c5410601fb59
Added to database: 09/28/2026, 17:48:22 UTC
Last enriched: 09/28/2026, 18:02:44 UTC
Last updated: 09/29/2026, 04:42:08 UTC
Views: 12
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