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CVE-2026-120234— ag-ui-protocol ag-ui HTTP Transport e.text resource consumption

Quick assessment

Affected

ag-ui-protocol ag-ui

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 ag-ui-protocol 和 ag-ui 0.0.58 及更早版本中发现了一个安全弱点。该问题影响 HTTP Transport 组件中的 e.text 函数。攻击者通过远程执行恶意操作，可能导致资源耗尽。该漏洞的利用代码已公开，可被用于实际攻击。目前，修复该问题的拉取请求（Pull Request）正在等待审核通过。

CVSS 4.3 · Medium Updated Nov 01, 2026

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

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Vulnerability Information

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Vulnerability Title

ag-ui-protocol ag-ui HTTP Transport e.text resource consumption

Source: CVE Program / CVE List V5

Vulnerability 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.

Source: CVE Program / CVE List V5

CVSS Information

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

Source: CVE Program / CVE List V5

Vulnerability Type

未加控制的资源消耗(资源穷尽)

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
ag-ui-protocol	ag-ui	0.0.1	`cpe:2.3:a:ag-ui-protocol:ag-ui::::::::`

II. Public POCs for CVE-2026-120234

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Premium

No public POC found.

III. Intelligence Information for CVE-2026-120234

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Other References for CVE-2026-120234 (1)

CVE-2026-120234 | ag-ui-protocol ag-ui up to 0.0.58 HTTP Transport e.text resource consumption (Issue 2521) vdb-entry technical-description

Other References for CVE-2026-120234 (5)

https://github.com/ag-ui-protocol/ag-ui/pull/2698 issue-tracking patch
https://github.com/ag-ui-protocol/ag-ui/issues/2521 exploit issue-tracking
https://vuldb.com/cve/CVE-2026-120234 third-party-advisory
https://vuldb.com/vuln/429593/cti signature permissions-required
https://vuldb.com/submit/1015146 third-party-advisory

https://www.cve.org/CVERecord?id=CVE-2026-120234

Same Patch Batch · ag-ui-protocol · 2026-11-01 · 5 CVEs total

CVE-2026-120236	6.3 MEDIUM	ag-ui-protocol ag-ui Transport Decoder input validation
CVE-2026-120233	5.3 MEDIUM	ag-ui-protocol ag-ui HttpAgent http.ts information disclosure
CVE-2026-120235	4.3 MEDIUM	ag-ui-protocol ag-ui SSE Parser sse.ts parseSSEStream resource consumption
CVE-2026-120237	4.3 MEDIUM	ag-ui-protocol ag-ui Interrupt expiry index.ts isInterruptExpired resource consumption

IV. Related Vulnerabilities

Same product: ag-ui

Same vendor: ag-ui-protocol

Same weakness: CWE-400