Resource Consumption Flaw in ag-ui-protocol's Interrupt Expiry Component
CVE-2026-120237

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-2026-120237?

A vulnerability exists in the ag-ui-protocol affecting versions up to 0.0.58, specifically in the Interrupt expiry component's function isInterruptExpired. This flaw allows for potential remote exploitation that may lead to excessive resource consumption, creating significant performance issues. A patch is currently pending acceptance and should be applied promptly to mitigate risks associated with this vulnerability.

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-2026-120237 - Proof of Concept

References

https://vuldb.com/vuln/429596
vdb-entrytechnical-description
https://vuldb.com/vuln/429596/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-120237
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
.