CVE-2026-101101ag-ui-protocol ag-ui Middleware convert.ts JSON.parse uncaught exception
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 4.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:X/RL:O/RC:C
- Weakness (CWE)
- CWE-248
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulDB
- NVD analysis
- Deferred
- Record last updated
- Sep 28, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
ag-ui-protocol ag-ui ag-ui-protocol:ag-ui | 2026-09-07; 2026-09-08 not affected | CNA record |
References
- https://vuldb.com/vuln/410976vdb-entry, technical-description
- https://vuldb.com/vuln/410976/ctisignature, permissions-required
- https://vuldb.com/cve/CVE-2026-101101third-party-advisory
- https://vuldb.com/submit/934981third-party-advisory
- https://github.com/ag-ui-protocol/ag-ui/issues/2444issue-tracking
- https://github.com/ag-ui-protocol/ag-ui/pull/2493issue-tracking, patch
- https://github.com/ag-ui-protocol/ag-ui/commit/30f8c794d5b73df5c610153043db502b2cc106ccpatch
- https://github.com/ag-ui-protocol/ag-ui/releases/tag/release/2026-09-08patch
- https://github.com/ag-ui-protocol/ag-ui/product
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.