ag-ui-protocol ag-ui Middleware filter-tool-calls.ts FilterToolCallsMiddleware cleanup
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- None · Low · Low
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| ag-ui-protocol | ag-ui | 2026-09-07 | 2026-09-08 | Patch available | CNA |
- ag-ui Vendorag-ui-protocol Affected 2026-09-07 Fixed in 2026-09-08 Patch available CNA
CPE names CNA · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:ag-ui-protocol:ag-ui:*:*:*:*:*:*:*:* | — | — | — |
- cpe:2.3:a:ag-ui-protocol:ag-ui:*:*:*:*:*:*:*:* Versions — — ·—
Remediation
- Fix · CNA ag-ui (ag-ui-protocol) Fixed in 2026-09-08
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
Not affected: 1 product
- Red Hat Hardened Images
Timeline
- 2026-10-02 Threatist record created from CVE-2026-101100
- 2026-10-03 Alias added: GHSA-3mm7-4jh6-p5gf
- 2026-10-06 Affected versions changed · Red Hat
References
Patch 3
More ag-ui-protocol vulnerabilities
- TI-2026-83626 Information disclosure in ag-ui HttpAgent client CVSS 4.0MEDIUM 6.9
- TI-2026-83636 Uncontrolled resource consumption in ag-ui-protocol ag-ui CVSS 4.0MEDIUM 5.3
- TI-2026-83635 Improper input validation in ag-ui-protocol ag-ui Transport Decoder CVSS 4.0MEDIUM 5.3
- TI-2026-83632 Uncontrolled resource consumption in ag-ui SSE parser CVSS 4.0MEDIUM 5.3
- TI-2026-83628 Resource consumption in ag-ui-protocol ag-ui HTTP Transport CVSS 4.0MEDIUM 5.3
- TI-2026-62298 ag-ui-protocol ag-ui SSE Frame sse.rs resource consumption CVSS 4.0MEDIUM 6.9
Sources
- CVE-2026-101100 · CVE Program
- CVE-2026-101100 · NVD
- FIRST EPSS
- GHSA-3mm7-4jh6-p5gf · GitHub Advisory Database · CC BY 4.0
- CVE-2026-101100 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences