Vulnerability in Ag-Ui-Protocol Ag-Ui
CVE-2026-101101
A vulnerability has been found in ag-ui-protocol ag-ui up to 2026-09-07. This issue affects the function JSON.parse of the file legacy/convert.ts of the component Middleware. The manipulation leads to uncaught exception. Remote exploitation of the attack is possible. Upgrading to version 2026-09-08 is capable of addressing this issue. The identifier of the patch is 30f8c794d5b73df5c610153043db502b2cc106cc. Upgrading the affected component is recommended.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Ag-Ui-Protocol Ag-Ui — versions 2026-09-07
Weakness classification (CWE)
References
- vuldb.com/vuln/410976 (technical-description, vdb-entry)
- vuldb.com/vuln/410976/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-101101 (third-party-advisory)
- vuldb.com/submit/934981 (third-party-advisory)
- github.com/ag-ui-protocol/ag-ui/issues/2444 (issue-tracking)
- github.com/ag-ui-protocol/ag-ui/pull/2493 (issue-tracking, patch)
- github.com/ag-ui-protocol/ag-ui/commit/30f8c794d5b73df5c610153043db502b2cc106cc (patch)
- github.com/ag-ui-protocol/ag-ui/releases/tag/release/2026-09-08 (patch)
- github.com/ag-ui-protocol/ag-ui/ (product)
Frequently asked questions
- What is CVE-2026-101101?
- CVE-2026-101101 is a medium-severity vulnerability in Ag-Ui-Protocol Ag-Ui, classified under CWE-248. CVSS score: 4.3/10. Published 2026-09-28.
- How severe is CVE-2026-101101?
- Medium severity. CVSS v3 base score is 4.3 out of 10.