CVE-2026-101101 (CVSS 4.3)

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.

Is your site exposed to CVE-2026-101101?

Run a free security scan — no signup, results in seconds.

CVSS v3.1 Score

4.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

EPSS — Exploit Prediction

0.0035

Probability of exploitation

0.27%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-248 CWE-248

References

Other References

https://github.com/ag-ui-protocol/ag-ui/ https://github.com/ag-ui-protocol/ag-ui/commit/30f8c794d5b73df5c610153043db502b2cc106cc https://github.com/ag-ui-protocol/ag-ui/issues/2444 https://github.com/ag-ui-protocol/ag-ui/pull/2493 https://github.com/ag-ui-protocol/ag-ui/releases/tag/release/2026-09-08 https://vuldb.com/cve/CVE-2026-101101 https://vuldb.com/submit/934981 https://vuldb.com/vuln/410976 https://vuldb.com/vuln/410976/cti

Frequently Asked Questions

What is 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. It has a CVSS v3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2026-101101? +

CVE-2026-101101 has a CVSS v3.1 score of 4.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0035, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-101101? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2026-55780

NanaZip is the 7-Zip derivative intended for the modern Windows experience. Prior to 6.5.1749.0, NanaZip's .NET single-file bundle handler in …

CVE-2026-96277

Uncaught exception, Improper Handling of Exceptional Conditions vulnerability in Apache Thrift Ruby bindings. This issue affects Apache Thrift: before 0.25.0. …

CVE-2025-0657

A weakness in Automated Logic and Carrier i-Vu Gen5 router on driver version drv_gen5_106-01-2380, allows malformed packets to be sent …

CVE-2025-9124

A denial-of-service security issue in the affected product. The security issue stems from a fault occurring when a crafted CIP …

CVE-2026-53530

RaTeX is a KaTeX-compatible math rendering engine written in Rust. Prior to version 0.1.11, the public parser entrypoint `ratex_parser::parse(&str)` panics …

CVE-2026-85493

Uncontrolled Recursion vulnerability in Apache Thrift Dart and Java ME bindings. This issue affects Apache Thrift: before 0.25.0. Users are …

CVE-2026-101101