CVE-2026-120234: DoS (CVSS 4.3)

Description

A weakness has been identified in ag-ui-protocol ag-ui up to 0.0.58. This impacts the function e.text of the component HTTP Transport. Executing a manipulation can lead to resource consumption. The attack can be launched remotely. The exploit has been made available to the public and could be used for attacks. The pull request to fix this issue awaits acceptance.

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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

Weakness Type (CWE)

CWE-400 Uncontrolled Resource Consumption

CWE-404 CWE-404

References

Other References

https://github.com/ag-ui-protocol/ag-ui/ https://github.com/ag-ui-protocol/ag-ui/issues/2521 https://github.com/ag-ui-protocol/ag-ui/pull/2698 https://vuldb.com/cve/CVE-2026-120234 https://vuldb.com/submit/1015146 https://vuldb.com/vuln/429593 https://vuldb.com/vuln/429593/cti

Frequently Asked Questions

What is CVE-2026-120234? +

A weakness has been identified in ag-ui-protocol ag-ui up to 0.0.58. This impacts the function e.text of the component HTTP Transport. Executing a manipulation can lead to resource consumption. The attack can be launched remotely. The exploit has been made available to the public and could be used for attacks. The pull request to fix this issue awaits acceptance. It has a CVSS v3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2026-120234? +

CVE-2026-120234 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.

How do I check if I'm vulnerable to CVE-2026-120234? +

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.

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CVE-2026-120234