CVE-2026-101100

MEDIUM 5.4

ag-ui-protocol ag-ui Middleware filter-tool-calls.ts FilterToolCallsMiddleware cleanup

CVSS Score

5.4

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-459
Vendor	ag-ui-protocol
Product	ag-ui
Published	Sep 28, 2026
Last Updated	Sep 28, 2026

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CVSS v3 Breakdown

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

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

ag-ui-protocol / ag-ui

2026-09-07

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/410975 vuldb.com: https://vuldb.com/vuln/410975/cti vuldb.com: https://vuldb.com/cve/CVE-2026-101100 vuldb.com: https://vuldb.com/submit/934980 github.com: https://github.com/ag-ui-protocol/ag-ui/issues/2443 github.com: https://github.com/ag-ui-protocol/ag-ui/pull/2494 github.com: https://github.com/ag-ui-protocol/ag-ui/commit/c346119fe870b70f5c19738ee5119f3e1456e59d github.com: https://github.com/ag-ui-protocol/ag-ui/releases/tag/release/2026-09-08 github.com: https://github.com/ag-ui-protocol/ag-ui/

Credits

🔍 meraklbz (VulDB User)