Resource Consumption Vulnerability in ag-ui-protocol's HTTP Transport Component
CVE-2026-120234

5.3MEDIUM

Key Information:

Vendor

Ag-ui-protocol

Status
Ag-ui
Vendor
CVE Published:
1 November 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-120234?

A weakness has been identified in the ag-ui-protocol's HTTP Transport component, specifically impacting the 'e.text' function. This vulnerability allows attackers to execute remote manipulations, leading to significant resource consumption on affected systems. The exploit is currently publicly available, posing a risk to users of ag-ui up to version 0.0.58. A pending pull request aims to address this issue, highlighting the urgent need for affected users to update their systems.

Affected Version(s)

ag-ui 0.0.1

ag-ui 0.0.2

ag-ui 0.0.3

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-120234 - Proof of Concept

References

https://vuldb.com/vuln/429593
vdb-entrytechnical-description
https://vuldb.com/vuln/429593/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-120234
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

ez-lbz (VulDB User)
VulDB CNA Team
.