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CVE-2026-101100
ag-ui-protocol ag-ui Middleware filter-tool-calls.ts FilterToolCallsMiddleware cleanup
Medium5.3EPSS 0.30%
- Published
- Updated
- Reserved
- Assigned by
- VulDB
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
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| VulDBCNA (assigner) | 4.0 | Medium5.3 | 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 |
| VulDBCNA (assigner) | 3.1 | Medium5.4 | 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 |
| VulDBCNA (assigner) | 3.0 | Medium5.4 | 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 |
| VulDBCNA (assigner) | 2.0 | Medium5.5 | AV:N/AC:L/Au:S/C:N/I:P/A:P/E:ND/RL:OF/RC:C |
| NVDNVD · Deferred | 4.0 | Medium5.3 | 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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
- EPSS (exploitation in 30 days)
- 0.30% · top 77% of all CVEs (5 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.3.
Weakness
Affected products
- affected 2026-09-07
- unaffected 2026-09-08
References (9)
- VDB-410975 | ag-ui-protocol ag-ui Middleware filter-tool-calls.ts FilterToolCallsMiddleware cleanup (opens in a new tab)vdb-entrytechnical-description
- VDB-410975 | CTI Indicators (IOB, IOC, IOA) (opens in a new tab)signaturepermissions-required
- CVE-2026-101100 | CVE Analysis and Report (opens in a new tab)third-party-advisory
- Submit #934980 | ag-ui-protocol ag-ui v1.0 CWE-459 (opens in a new tab)third-party-advisory
- https://github.com/ag-ui-protocol/ag-ui/issues/2443 (opens in a new tab)issue-tracking
- https://github.com/ag-ui-protocol/ag-ui/pull/2494 (opens in a new tab)issue-trackingpatch
- https://github.com/ag-ui-protocol/ag-ui/commit/c346119fe870b70f5c19738ee5119f3e1456e59d (opens in a new tab)patch
- https://github.com/ag-ui-protocol/ag-ui/releases/tag/release/2026-09-08 (opens in a new tab)patch
- https://github.com/ag-ui-protocol/ag-ui/ (opens in a new tab)product
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2026-101100)Record last updated .