CVE-2026-101100 ag-ui-protocol ag-ui Middleware filter-tool-calls.ts FilterToolCallsMiddleware cleanup
Incomplete cleanup in FilterToolCallsMiddleware may allow remote attackers to access residual data or bypass intended filtering mechanisms.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-101100?
CVE-2026-101100 is a medium-severity vulnerability in ag-ui-protocol ag-ui, published on 28 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-459
Which versions are affected by CVE-2026-101100?
How do I fix CVE-2026-101100?
No fix has been published for CVE-2026-101100 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-101100 being exploited?
There is no known exploitation of CVE-2026-101100 in the wild and no public exploit code.
Sources
Also known as GHSA-3mm7-4jh6-p5gf.