Improper Access Control in OpenBMB Internet of Agents Message Handler
CVE-2026-123881

6.9MEDIUM

Key Information:

Vendor

Openbmb

Status
Internet Of Agents
Vendor
CVE Published:
7 November 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-123881?

A vulnerability exists in OpenBMB Internet of Agents that affects the fetch_chat_record function within the Message Handler component. This issue allows for improper access control when manipulating the comm_id argument, enabling potential unauthorized access. The vulnerability can be exploited remotely, and although it has been disclosed, the project maintainers have not yet addressed the reported issue.

Affected Version(s)

Internet of Agents 9d78e88e47160eb42ee1ee8538c05e1c2c47877a

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-2026-123881 - Proof of Concept

References

https://vuldb.com/vuln/432019
vdb-entrytechnical-description
https://vuldb.com/vuln/432019/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-123881
third-party-advisory

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
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

Evo1ution (VulDB User)
VulDB CNA Team
.