Vulnerability · Published Nov 7, 2026 · Assigned by VulDB

CVE-2026-123964OpenBMB Internet of Agents Collaboration Layer communication_layer.py launch_goal infinite loop

Medium 4.3

In plain English

A medium-severity infinite loop in Internet of Agents from OpenBMB. There are no confirmed reports of exploitation so far.

Severity (CVSS 3.1)4.3Medium

Exploit odds (30 days)–no EPSS score yet

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

A vulnerability was detected in OpenBMB Internet of Agents up to 9d78e88e47160eb42ee1ee8538c05e1c2c47877a. This affects the function launch_goal of the file im_client/communication/communication_layer.py of the component Collaboration Layer. Performing a manipulation of the argument max_turns results in infinite loop. The attack may be initiated remotely. The exploit is now public and may be used. This product uses a rolling release model to deliver continuous updates. As a result, specific version information for affected or updated releases is not available. The project was informed of the problem early through an issue report but has not responded yet.

Affected products (as reported)

Vendor	Product	Versions
OpenBMB	Internet of Agents	9d78e88e47160eb42ee1ee8538c05e1c2c47877a

Weakness: CWE-835, CWE-404 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:C

References

VDB-432034 | OpenBMB Internet of Agents Collaboration Layer communication_layer.py launch_goal infinite loop vdb-entry, technical-description
VDB-432034 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
CVE-2026-123964 | CVE Analysis and Report third-party-advisory
Submit #1033798 | OpenBMB Internet of Agents(IoA) 9d78e88 Excessive Iteration third-party-advisory
https://github.com/OpenBMB/IoA/issues/22 exploit, issue-tracking