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Medium severity · published Sep 28, 2026
CVE-2026-101101
ag-ui-protocol ag-ui Middleware convert.ts JSON.parse uncaught exception
4.3
CVSS
0.4%
EPSS
No
On KEV
Description
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 vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 29% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AG
ag-ui · ag-ui-protocol
2026-09-07 · source: vendor
Affected product
AG
ag-ui
ag-ui-protocol
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-101101
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-101101
vdb-entry
https://vuldb.com/vuln/410976
signature
https://vuldb.com/vuln/410976/cti
third-party-advisory
https://vuldb.com/cve/CVE-2026-101101
third-party-advisory
https://vuldb.com/submit/934981
issue-tracking
https://github.com/ag-ui-protocol/ag-ui/issues/2444
issue-tracking
https://github.com/ag-ui-protocol/ag-ui/pull/2493
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