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

Status: published. Published: 2026-11-07. Updated: 2026-11-07.

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.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- OpenBMB / Internet of Agents: 9d78e88e47160eb42ee1ee8538c05e1c2c47877a (affected). Source: CNA: VulDB

## Severity and prioritization

- CVSS 4.0: 5.3 (medium); CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P; source: CNA: VulDB

- CVSS 3.1: 4.3 (medium); 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; source: CNA: VulDB

- CVSS 3.0: 4.3 (medium); CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:C; source: CNA: VulDB

- CVSS 2.0: 4 (medium); AV:N/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:C; source: CNA: VulDB

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-835, CWE-404

## Exploit evidence

- exploit: https://github.com/OpenBMB/IoA/issues/22 (CNA: VulDB)

## References

- https://vuldb.com/vuln/432034 (CNA: VulDB; vdb-entry, technical-description)

- https://vuldb.com/vuln/432034/cti (CNA: VulDB; signature, permissions-required)

- https://vuldb.com/cve/CVE-2026-123964 (CNA: VulDB; third-party-advisory)

- https://vuldb.com/submit/1033798 (CNA: VulDB; third-party-advisory)

- https://github.com/OpenBMB/IoA/issues/22 (CNA: VulDB; exploit, issue-tracking)

## Provenance

- CNA: VulDB: https://www.cve.org/CVERecord?id=CVE-2026-123964; retrieved 2026-11-07; source updated 2026-11-07

Revision: 648ba1ad1df9d87bf238755cdd6911aac26669fb359b1de0861f4e9f6915d90a

Canonical: https://y2.dev/cve/CVE-2026-123964

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